diff --git a/metropolis/cli/dbg/main.go b/metropolis/cli/dbg/main.go
index e9e43be..1845ad1 100644
--- a/metropolis/cli/dbg/main.go
+++ b/metropolis/cli/dbg/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/cli/flagdefs/flagdefs.go b/metropolis/cli/flagdefs/flagdefs.go
index fe2423e..5ccaec4 100644
--- a/metropolis/cli/flagdefs/flagdefs.go
+++ b/metropolis/cli/flagdefs/flagdefs.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package flagdefs contains shared flag definitions for Metropolis.
 // The usage is the same as for the standard flags in the [flag] package,
 // except that the [flag.FlagSet] needs to be passed in the first parameter.
diff --git a/metropolis/cli/metroctl/cmd_certs.go b/metropolis/cli/metroctl/cmd_certs.go
index 9aa0953..7d69a20 100644
--- a/metropolis/cli/metroctl/cmd_certs.go
+++ b/metropolis/cli/metroctl/cmd_certs.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_cluster.go b/metropolis/cli/metroctl/cmd_cluster.go
index e82cb95..a474061 100644
--- a/metropolis/cli/metroctl/cmd_cluster.go
+++ b/metropolis/cli/metroctl/cmd_cluster.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import "github.com/spf13/cobra"
diff --git a/metropolis/cli/metroctl/cmd_cluster_configure.go b/metropolis/cli/metroctl/cmd_cluster_configure.go
index b59246b..73483c1 100644
--- a/metropolis/cli/metroctl/cmd_cluster_configure.go
+++ b/metropolis/cli/metroctl/cmd_cluster_configure.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_cluster_takeownership.go b/metropolis/cli/metroctl/cmd_cluster_takeownership.go
index 068dd3b..3566ea0 100644
--- a/metropolis/cli/metroctl/cmd_cluster_takeownership.go
+++ b/metropolis/cli/metroctl/cmd_cluster_takeownership.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_install.go b/metropolis/cli/metroctl/cmd_install.go
index 9a996b2..1f73d76 100644
--- a/metropolis/cli/metroctl/cmd_install.go
+++ b/metropolis/cli/metroctl/cmd_install.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_install_ssh.go b/metropolis/cli/metroctl/cmd_install_ssh.go
index f779f43..5feda6f 100644
--- a/metropolis/cli/metroctl/cmd_install_ssh.go
+++ b/metropolis/cli/metroctl/cmd_install_ssh.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_install_usb.go b/metropolis/cli/metroctl/cmd_install_usb.go
index e1a22a4..38c1501 100644
--- a/metropolis/cli/metroctl/cmd_install_usb.go
+++ b/metropolis/cli/metroctl/cmd_install_usb.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_k8s_configure.go b/metropolis/cli/metroctl/cmd_k8s_configure.go
index 5ce4032..6509318 100644
--- a/metropolis/cli/metroctl/cmd_k8s_configure.go
+++ b/metropolis/cli/metroctl/cmd_k8s_configure.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_k8scredplugin.go b/metropolis/cli/metroctl/cmd_k8scredplugin.go
index 50bf474..0054e70 100644
--- a/metropolis/cli/metroctl/cmd_k8scredplugin.go
+++ b/metropolis/cli/metroctl/cmd_k8scredplugin.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_node.go b/metropolis/cli/metroctl/cmd_node.go
index a875725..2e0b537 100644
--- a/metropolis/cli/metroctl/cmd_node.go
+++ b/metropolis/cli/metroctl/cmd_node.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_node_approve.go b/metropolis/cli/metroctl/cmd_node_approve.go
index f935bbc..65d2811 100644
--- a/metropolis/cli/metroctl/cmd_node_approve.go
+++ b/metropolis/cli/metroctl/cmd_node_approve.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_node_logs.go b/metropolis/cli/metroctl/cmd_node_logs.go
index b06a9f7..36ccd00 100644
--- a/metropolis/cli/metroctl/cmd_node_logs.go
+++ b/metropolis/cli/metroctl/cmd_node_logs.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_node_metrics.go b/metropolis/cli/metroctl/cmd_node_metrics.go
index 1572147..6b108ae 100644
--- a/metropolis/cli/metroctl/cmd_node_metrics.go
+++ b/metropolis/cli/metroctl/cmd_node_metrics.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/cmd_node_set.go b/metropolis/cli/metroctl/cmd_node_set.go
index 4211aca..677a425 100644
--- a/metropolis/cli/metroctl/cmd_node_set.go
+++ b/metropolis/cli/metroctl/cmd_node_set.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/core/ca_tofu.go b/metropolis/cli/metroctl/core/ca_tofu.go
index b578aa6..3f3c135 100644
--- a/metropolis/cli/metroctl/core/ca_tofu.go
+++ b/metropolis/cli/metroctl/core/ca_tofu.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package core
 
 import (
diff --git a/metropolis/cli/metroctl/core/config.go b/metropolis/cli/metroctl/core/config.go
index d22dd9a..38862af 100644
--- a/metropolis/cli/metroctl/core/config.go
+++ b/metropolis/cli/metroctl/core/config.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package core
 
 import (
diff --git a/metropolis/cli/metroctl/core/core.go b/metropolis/cli/metroctl/core/core.go
index 545a408..8e7e196 100644
--- a/metropolis/cli/metroctl/core/core.go
+++ b/metropolis/cli/metroctl/core/core.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package core contains parts of metroctl which do significant amounts of work
 // beyond just providing a CLI for them.
 // This package is intended to be used for integrating with functions provided
diff --git a/metropolis/cli/metroctl/core/install.go b/metropolis/cli/metroctl/core/install.go
index 4175e22..190f66a 100644
--- a/metropolis/cli/metroctl/core/install.go
+++ b/metropolis/cli/metroctl/core/install.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package core
 
 import (
diff --git a/metropolis/cli/metroctl/core/rpc.go b/metropolis/cli/metroctl/core/rpc.go
index 91d5175..8b377f5 100644
--- a/metropolis/cli/metroctl/core/rpc.go
+++ b/metropolis/cli/metroctl/core/rpc.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package core
 
 import (
diff --git a/metropolis/cli/metroctl/main.go b/metropolis/cli/metroctl/main.go
index 6d26d4c..b5731c6 100644
--- a/metropolis/cli/metroctl/main.go
+++ b/metropolis/cli/metroctl/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/rpc.go b/metropolis/cli/metroctl/rpc.go
index cfe1b41..ec3a4e4 100644
--- a/metropolis/cli/metroctl/rpc.go
+++ b/metropolis/cli/metroctl/rpc.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/table_node.go b/metropolis/cli/metroctl/table_node.go
index 0ef23d8..5fcdb25 100644
--- a/metropolis/cli/metroctl/table_node.go
+++ b/metropolis/cli/metroctl/table_node.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/metroctl/test/main_test.go b/metropolis/cli/metroctl/test/main_test.go
index e02f9c1..e1ca606 100644
--- a/metropolis/cli/metroctl/test/main_test.go
+++ b/metropolis/cli/metroctl/test/main_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package test
 
 import (
diff --git a/metropolis/cli/takeover/boot.go b/metropolis/cli/takeover/boot.go
index eb71694..21ca708 100644
--- a/metropolis/cli/takeover/boot.go
+++ b/metropolis/cli/takeover/boot.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/takeover/e2e/main_test.go b/metropolis/cli/takeover/e2e/main_test.go
index 32d7fb8..c9108cd 100644
--- a/metropolis/cli/takeover/e2e/main_test.go
+++ b/metropolis/cli/takeover/e2e/main_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package e2e
 
 import (
diff --git a/metropolis/cli/takeover/install.go b/metropolis/cli/takeover/install.go
index b0c56d0..005b590 100644
--- a/metropolis/cli/takeover/install.go
+++ b/metropolis/cli/takeover/install.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/takeover/main.go b/metropolis/cli/takeover/main.go
index a609a63..97ed7a4 100644
--- a/metropolis/cli/takeover/main.go
+++ b/metropolis/cli/takeover/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/cli/takeover/takeover.go b/metropolis/cli/takeover/takeover.go
index 327d3c1..95420dc 100644
--- a/metropolis/cli/takeover/takeover.go
+++ b/metropolis/cli/takeover/takeover.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/installer/main.go b/metropolis/installer/main.go
index cc640bf..e9956fd 100644
--- a/metropolis/installer/main.go
+++ b/metropolis/installer/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Installer creates a Metropolis image at a suitable block device based on the
 // installer bundle present in the installation medium's ESP, after which it
diff --git a/metropolis/installer/test/run_test.go b/metropolis/installer/test/run_test.go
index a8db235..766c839 100644
--- a/metropolis/installer/test/run_test.go
+++ b/metropolis/installer/test/run_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // This package runs the installer image in a VM provided with an empty block
 // device. It then examines the installer console output and the blok device to
diff --git a/metropolis/installer/test/testos/main.go b/metropolis/installer/test/testos/main.go
index f0a6e80..f648a83 100644
--- a/metropolis/installer/test/testos/main.go
+++ b/metropolis/installer/test/testos/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // TestOS is a tiny "operating system" which is packaged the exact same way as
 // an actual Metropolis node but only outputs a single flag before exiting.
 // It's used for decoupling the installer tests from the Metropolis Node code.
diff --git a/metropolis/node/core/abloader/main.rs b/metropolis/node/core/abloader/main.rs
index 905c3ca..4489b73 100644
--- a/metropolis/node/core/abloader/main.rs
+++ b/metropolis/node/core/abloader/main.rs
@@ -1,3 +1,8 @@
+/*
+ * Copyright The Monogon Project Authors.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #![no_main]
 #![no_std]
 
diff --git a/metropolis/node/core/abloader/spec/gomod-generated-placeholder.go b/metropolis/node/core/abloader/spec/gomod-generated-placeholder.go
index f09cd57..ca2145c 100644
--- a/metropolis/node/core/abloader/spec/gomod-generated-placeholder.go
+++ b/metropolis/node/core/abloader/spec/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package spec
diff --git a/metropolis/node/core/bios_bootcode/genlogo/main.go b/metropolis/node/core/bios_bootcode/genlogo/main.go
index 23686fd..f810357 100644
--- a/metropolis/node/core/bios_bootcode/genlogo/main.go
+++ b/metropolis/node/core/bios_bootcode/genlogo/main.go
@@ -1,5 +1,5 @@
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-// Copyright Monogon Project Authors
 
 package main
 
diff --git a/metropolis/node/core/cluster/cluster.go b/metropolis/node/core/cluster/cluster.go
index e320bb0..a009c33 100644
--- a/metropolis/node/core/cluster/cluster.go
+++ b/metropolis/node/core/cluster/cluster.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package cluster implements low-level clustering logic, especially logic
 // regarding to bootstrapping, registering into and joining a cluster. Its goal
diff --git a/metropolis/node/core/cluster/cluster_bootstrap.go b/metropolis/node/core/cluster/cluster_bootstrap.go
index bb82df9..4a6c1c7 100644
--- a/metropolis/node/core/cluster/cluster_bootstrap.go
+++ b/metropolis/node/core/cluster/cluster_bootstrap.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package cluster
 
diff --git a/metropolis/node/core/cluster/cluster_join.go b/metropolis/node/core/cluster/cluster_join.go
index 112b463..eb0ff73 100644
--- a/metropolis/node/core/cluster/cluster_join.go
+++ b/metropolis/node/core/cluster/cluster_join.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package cluster
 
 import (
diff --git a/metropolis/node/core/cluster/cluster_register.go b/metropolis/node/core/cluster/cluster_register.go
index 5df7448..a6089cb 100644
--- a/metropolis/node/core/cluster/cluster_register.go
+++ b/metropolis/node/core/cluster/cluster_register.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package cluster
 
 import (
diff --git a/metropolis/node/core/clusternet/clusternet.go b/metropolis/node/core/clusternet/clusternet.go
index 96a500d..89c5c10 100644
--- a/metropolis/node/core/clusternet/clusternet.go
+++ b/metropolis/node/core/clusternet/clusternet.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package clusternet implements a Cluster Networking mesh service running on all
 // Metropolis nodes.
 //
diff --git a/metropolis/node/core/clusternet/clusternet_test.go b/metropolis/node/core/clusternet/clusternet_test.go
index f07f3e5..317c409 100644
--- a/metropolis/node/core/clusternet/clusternet_test.go
+++ b/metropolis/node/core/clusternet/clusternet_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package clusternet
 
 import (
diff --git a/metropolis/node/core/clusternet/types.go b/metropolis/node/core/clusternet/types.go
index 67e401a..d1f2b06 100644
--- a/metropolis/node/core/clusternet/types.go
+++ b/metropolis/node/core/clusternet/types.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package clusternet
 
 import (
diff --git a/metropolis/node/core/clusternet/wireguard.go b/metropolis/node/core/clusternet/wireguard.go
index cc5f941..096e74d 100644
--- a/metropolis/node/core/clusternet/wireguard.go
+++ b/metropolis/node/core/clusternet/wireguard.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package clusternet
 
 import (
diff --git a/metropolis/node/core/consensus/client/client.go b/metropolis/node/core/consensus/client/client.go
index 449274a..75489cc 100644
--- a/metropolis/node/core/consensus/client/client.go
+++ b/metropolis/node/core/consensus/client/client.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // package client implements a higher-level client for consensus/etcd that is
 // to be used within the Metropolis node code for unprivileged access (ie.
diff --git a/metropolis/node/core/consensus/client/unimplemented.go b/metropolis/node/core/consensus/client/unimplemented.go
index 9b146eb..c80bc47 100644
--- a/metropolis/node/core/consensus/client/unimplemented.go
+++ b/metropolis/node/core/consensus/client/unimplemented.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package client
 
 import (
diff --git a/metropolis/node/core/consensus/configuration.go b/metropolis/node/core/consensus/configuration.go
index 071f5f5..a3379ca 100644
--- a/metropolis/node/core/consensus/configuration.go
+++ b/metropolis/node/core/consensus/configuration.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package consensus
 
 import (
diff --git a/metropolis/node/core/consensus/consensus.go b/metropolis/node/core/consensus/consensus.go
index 12913bd..69ded4f 100644
--- a/metropolis/node/core/consensus/consensus.go
+++ b/metropolis/node/core/consensus/consensus.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package consensus implements a runnable that manages an etcd instance which
 // forms part of a Metropolis etcd cluster. This cluster is a foundational
diff --git a/metropolis/node/core/consensus/consensus_test.go b/metropolis/node/core/consensus/consensus_test.go
index 64dd0b3..d1aa2aa 100644
--- a/metropolis/node/core/consensus/consensus_test.go
+++ b/metropolis/node/core/consensus/consensus_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package consensus
 
diff --git a/metropolis/node/core/consensus/logparser.go b/metropolis/node/core/consensus/logparser.go
index f825431..bdf2982 100644
--- a/metropolis/node/core/consensus/logparser.go
+++ b/metropolis/node/core/consensus/logparser.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package consensus
 
 import (
diff --git a/metropolis/node/core/consensus/logparser_test.go b/metropolis/node/core/consensus/logparser_test.go
index 101211c..52a9f8e 100644
--- a/metropolis/node/core/consensus/logparser_test.go
+++ b/metropolis/node/core/consensus/logparser_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package consensus
 
 import (
diff --git a/metropolis/node/core/consensus/status.go b/metropolis/node/core/consensus/status.go
index 40988e5..0886531 100644
--- a/metropolis/node/core/consensus/status.go
+++ b/metropolis/node/core/consensus/status.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package consensus
 
 import (
diff --git a/metropolis/node/core/consensus/testhelpers.go b/metropolis/node/core/consensus/testhelpers.go
index 3471e3c..6411cc3 100644
--- a/metropolis/node/core/consensus/testhelpers.go
+++ b/metropolis/node/core/consensus/testhelpers.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package consensus
 
 import (
diff --git a/metropolis/node/core/curator/bootstrap.go b/metropolis/node/core/curator/bootstrap.go
index bdc7f28..fe5e4b0 100644
--- a/metropolis/node/core/curator/bootstrap.go
+++ b/metropolis/node/core/curator/bootstrap.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/curator.go b/metropolis/node/core/curator/curator.go
index 237a50c..5f6ffa1 100644
--- a/metropolis/node/core/curator/curator.go
+++ b/metropolis/node/core/curator/curator.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // package curator implements the Curator, a service responsible for management
 // of the Metropolis cluster that it is running on.
 //
diff --git a/metropolis/node/core/curator/curator_test.go b/metropolis/node/core/curator/curator_test.go
index 841a813..da021c0 100644
--- a/metropolis/node/core/curator/curator_test.go
+++ b/metropolis/node/core/curator/curator_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/filters.go b/metropolis/node/core/curator/filters.go
index 4a100bb..c569d3b 100644
--- a/metropolis/node/core/curator/filters.go
+++ b/metropolis/node/core/curator/filters.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // This file contains common implementation related to filtering of protobuf
 // messages with Common Expression Language.
 package curator
diff --git a/metropolis/node/core/curator/impl_follower.go b/metropolis/node/core/curator/impl_follower.go
index 1df859c..96a9385 100644
--- a/metropolis/node/core/curator/impl_follower.go
+++ b/metropolis/node/core/curator/impl_follower.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader.go b/metropolis/node/core/curator/impl_leader.go
index f40c8d2..9107b92 100644
--- a/metropolis/node/core/curator/impl_leader.go
+++ b/metropolis/node/core/curator/impl_leader.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_aaa.go b/metropolis/node/core/curator/impl_leader_aaa.go
index 8f4eb84..8813108 100644
--- a/metropolis/node/core/curator/impl_leader_aaa.go
+++ b/metropolis/node/core/curator/impl_leader_aaa.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_background.go b/metropolis/node/core/curator/impl_leader_background.go
index 11c4134..df6e24d 100644
--- a/metropolis/node/core/curator/impl_leader_background.go
+++ b/metropolis/node/core/curator/impl_leader_background.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_certificates.go b/metropolis/node/core/curator/impl_leader_certificates.go
index 40211fd..1326c4c 100644
--- a/metropolis/node/core/curator/impl_leader_certificates.go
+++ b/metropolis/node/core/curator/impl_leader_certificates.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_cluster_networking.go b/metropolis/node/core/curator/impl_leader_cluster_networking.go
index b2cc8ba..6ab1bfb 100644
--- a/metropolis/node/core/curator/impl_leader_cluster_networking.go
+++ b/metropolis/node/core/curator/impl_leader_cluster_networking.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_curator.go b/metropolis/node/core/curator/impl_leader_curator.go
index 0246498..addd789 100644
--- a/metropolis/node/core/curator/impl_leader_curator.go
+++ b/metropolis/node/core/curator/impl_leader_curator.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_management.go b/metropolis/node/core/curator/impl_leader_management.go
index f6fe159..517144c 100644
--- a/metropolis/node/core/curator/impl_leader_management.go
+++ b/metropolis/node/core/curator/impl_leader_management.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/impl_leader_test.go b/metropolis/node/core/curator/impl_leader_test.go
index dc8bdee..59788e8 100644
--- a/metropolis/node/core/curator/impl_leader_test.go
+++ b/metropolis/node/core/curator/impl_leader_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/listener.go b/metropolis/node/core/curator/listener.go
index 40d1f19..cb79cd8 100644
--- a/metropolis/node/core/curator/listener.go
+++ b/metropolis/node/core/curator/listener.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go b/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go
index 778f64e..da08b30 100644
--- a/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go
+++ b/metropolis/node/core/curator/proto/api/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package api
diff --git a/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go b/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go
index 735e4dc..b4ed19a 100644
--- a/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go
+++ b/metropolis/node/core/curator/proto/private/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package private
diff --git a/metropolis/node/core/curator/reconfigure.go b/metropolis/node/core/curator/reconfigure.go
index 8349a68..ea31174 100644
--- a/metropolis/node/core/curator/reconfigure.go
+++ b/metropolis/node/core/curator/reconfigure.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/reconfigure_test.go b/metropolis/node/core/curator/reconfigure_test.go
index fb363da..2f63485 100644
--- a/metropolis/node/core/curator/reconfigure_test.go
+++ b/metropolis/node/core/curator/reconfigure_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/state.go b/metropolis/node/core/curator/state.go
index 39837a7..ce4ff3d 100644
--- a/metropolis/node/core/curator/state.go
+++ b/metropolis/node/core/curator/state.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/state_cluster.go b/metropolis/node/core/curator/state_cluster.go
index 6c3f39c..e678414 100644
--- a/metropolis/node/core/curator/state_cluster.go
+++ b/metropolis/node/core/curator/state_cluster.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/state_node.go b/metropolis/node/core/curator/state_node.go
index 5138134..7ada43a 100644
--- a/metropolis/node/core/curator/state_node.go
+++ b/metropolis/node/core/curator/state_node.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package curator
 
diff --git a/metropolis/node/core/curator/state_pki.go b/metropolis/node/core/curator/state_pki.go
index 7eb3f76..4b0cf76 100644
--- a/metropolis/node/core/curator/state_pki.go
+++ b/metropolis/node/core/curator/state_pki.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/state_registerticket.go b/metropolis/node/core/curator/state_registerticket.go
index 8b8ea15..41b6fb8 100644
--- a/metropolis/node/core/curator/state_registerticket.go
+++ b/metropolis/node/core/curator/state_registerticket.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import (
diff --git a/metropolis/node/core/curator/state_test.go b/metropolis/node/core/curator/state_test.go
index 0bee7e1..faafab0 100644
--- a/metropolis/node/core/curator/state_test.go
+++ b/metropolis/node/core/curator/state_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package curator
 
 import "testing"
diff --git a/metropolis/node/core/curator/watcher/watch_node.go b/metropolis/node/core/curator/watcher/watch_node.go
index 45c51ab..cc2d498 100644
--- a/metropolis/node/core/curator/watcher/watch_node.go
+++ b/metropolis/node/core/curator/watcher/watch_node.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package watcher
 
 import (
diff --git a/metropolis/node/core/curator/watcher/watch_nodes.go b/metropolis/node/core/curator/watcher/watch_nodes.go
index 4c08d34..fbd1be7 100644
--- a/metropolis/node/core/curator/watcher/watch_nodes.go
+++ b/metropolis/node/core/curator/watcher/watch_nodes.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package watcher
 
 import (
diff --git a/metropolis/node/core/debug_service_disabled.go b/metropolis/node/core/debug_service_disabled.go
index 815a0dd..4ba72cb 100644
--- a/metropolis/node/core/debug_service_disabled.go
+++ b/metropolis/node/core/debug_service_disabled.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/node/core/debug_service_enabled.go b/metropolis/node/core/debug_service_enabled.go
index b455757..4f8495f 100644
--- a/metropolis/node/core/debug_service_enabled.go
+++ b/metropolis/node/core/debug_service_enabled.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/node/core/delve_disabled.go b/metropolis/node/core/delve_disabled.go
index 116ae3e..93ea312 100644
--- a/metropolis/node/core/delve_disabled.go
+++ b/metropolis/node/core/delve_disabled.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/node/core/delve_enabled.go b/metropolis/node/core/delve_enabled.go
index 0bd546f..54a64c7 100644
--- a/metropolis/node/core/delve_enabled.go
+++ b/metropolis/node/core/delve_enabled.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/node/core/devmgr/devmgr.go b/metropolis/node/core/devmgr/devmgr.go
index b5c1835..41730fc 100644
--- a/metropolis/node/core/devmgr/devmgr.go
+++ b/metropolis/node/core/devmgr/devmgr.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package devmgr is the userspace pendant to the kernel device management
 // system. It talks to the kernel and the performs any further userspace actions
 // related to device events. It corresponds very roughly to systemd-udevd on
diff --git a/metropolis/node/core/identity/certificates.go b/metropolis/node/core/identity/certificates.go
index 86cfd13..8e774c6 100644
--- a/metropolis/node/core/identity/certificates.go
+++ b/metropolis/node/core/identity/certificates.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package identity
 
 import (
diff --git a/metropolis/node/core/identity/certificates_test.go b/metropolis/node/core/identity/certificates_test.go
index d2dd0cd..903bbe8 100644
--- a/metropolis/node/core/identity/certificates_test.go
+++ b/metropolis/node/core/identity/certificates_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package identity
 
 import (
diff --git a/metropolis/node/core/identity/identity.go b/metropolis/node/core/identity/identity.go
index 6663771..399a2d4 100644
--- a/metropolis/node/core/identity/identity.go
+++ b/metropolis/node/core/identity/identity.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package identity
 
 import (
diff --git a/metropolis/node/core/localstorage/crypt/blockdev.go b/metropolis/node/core/localstorage/crypt/blockdev.go
index d3c915e..d2c1b15 100644
--- a/metropolis/node/core/localstorage/crypt/blockdev.go
+++ b/metropolis/node/core/localstorage/crypt/blockdev.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package crypt
 
diff --git a/metropolis/node/core/localstorage/crypt/crypt.go b/metropolis/node/core/localstorage/crypt/crypt.go
index bd20efd..b429fdf 100644
--- a/metropolis/node/core/localstorage/crypt/crypt.go
+++ b/metropolis/node/core/localstorage/crypt/crypt.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package crypt implements block device (eg. disk) encryption and authentication
 // using dm-crypt and dm-integrity.
diff --git a/metropolis/node/core/localstorage/crypt/crypt_encryption.go b/metropolis/node/core/localstorage/crypt/crypt_encryption.go
index fb8a129..3c11a6d 100644
--- a/metropolis/node/core/localstorage/crypt/crypt_encryption.go
+++ b/metropolis/node/core/localstorage/crypt/crypt_encryption.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package crypt
 
 import (
diff --git a/metropolis/node/core/localstorage/crypt/crypt_integrity.go b/metropolis/node/core/localstorage/crypt/crypt_integrity.go
index b2e43f8..99b77a5 100644
--- a/metropolis/node/core/localstorage/crypt/crypt_integrity.go
+++ b/metropolis/node/core/localstorage/crypt/crypt_integrity.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package crypt
 
 import (
diff --git a/metropolis/node/core/localstorage/crypt/crypt_test.go b/metropolis/node/core/localstorage/crypt/crypt_test.go
index 7d8db9d..e99bdf5 100644
--- a/metropolis/node/core/localstorage/crypt/crypt_test.go
+++ b/metropolis/node/core/localstorage/crypt/crypt_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package crypt
 
 import (
diff --git a/metropolis/node/core/localstorage/declarative/declarative.go b/metropolis/node/core/localstorage/declarative/declarative.go
index 5e194b5..6736e1f 100644
--- a/metropolis/node/core/localstorage/declarative/declarative.go
+++ b/metropolis/node/core/localstorage/declarative/declarative.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package declarative
 
diff --git a/metropolis/node/core/localstorage/declarative/placement.go b/metropolis/node/core/localstorage/declarative/placement.go
index a59912c..0406774 100644
--- a/metropolis/node/core/localstorage/declarative/placement.go
+++ b/metropolis/node/core/localstorage/declarative/placement.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package declarative
 
diff --git a/metropolis/node/core/localstorage/declarative/placement_local.go b/metropolis/node/core/localstorage/declarative/placement_local.go
index 77d407c..3e17241 100644
--- a/metropolis/node/core/localstorage/declarative/placement_local.go
+++ b/metropolis/node/core/localstorage/declarative/placement_local.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package declarative
 
diff --git a/metropolis/node/core/localstorage/directory_data.go b/metropolis/node/core/localstorage/directory_data.go
index ab1bcd9..ed3113f 100644
--- a/metropolis/node/core/localstorage/directory_data.go
+++ b/metropolis/node/core/localstorage/directory_data.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package localstorage
 
diff --git a/metropolis/node/core/localstorage/directory_pki.go b/metropolis/node/core/localstorage/directory_pki.go
index 75c8a2b..fcfec1c 100644
--- a/metropolis/node/core/localstorage/directory_pki.go
+++ b/metropolis/node/core/localstorage/directory_pki.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package localstorage
 
diff --git a/metropolis/node/core/localstorage/directory_root.go b/metropolis/node/core/localstorage/directory_root.go
index bfacb4e..d6d9995 100644
--- a/metropolis/node/core/localstorage/directory_root.go
+++ b/metropolis/node/core/localstorage/directory_root.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package localstorage
 
diff --git a/metropolis/node/core/localstorage/storage.go b/metropolis/node/core/localstorage/storage.go
index b6efcf3..029ce0c 100644
--- a/metropolis/node/core/localstorage/storage.go
+++ b/metropolis/node/core/localstorage/storage.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package localstorage
 
diff --git a/metropolis/node/core/localstorage/storage_esp.go b/metropolis/node/core/localstorage/storage_esp.go
index f2cf41f..4fd4e24 100644
--- a/metropolis/node/core/localstorage/storage_esp.go
+++ b/metropolis/node/core/localstorage/storage_esp.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package localstorage
 
diff --git a/metropolis/node/core/localstorage/storage_test.go b/metropolis/node/core/localstorage/storage_test.go
index b90d7a7..d360055 100644
--- a/metropolis/node/core/localstorage/storage_test.go
+++ b/metropolis/node/core/localstorage/storage_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package localstorage
 
diff --git a/metropolis/node/core/main.go b/metropolis/node/core/main.go
index 527030a..890a30b 100644
--- a/metropolis/node/core/main.go
+++ b/metropolis/node/core/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/node/core/metrics/discovery.go b/metropolis/node/core/metrics/discovery.go
index 116291e..fea4582 100644
--- a/metropolis/node/core/metrics/discovery.go
+++ b/metropolis/node/core/metrics/discovery.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package metrics
 
 import (
diff --git a/metropolis/node/core/metrics/exporters.go b/metropolis/node/core/metrics/exporters.go
index 2e8c1df..003a690 100644
--- a/metropolis/node/core/metrics/exporters.go
+++ b/metropolis/node/core/metrics/exporters.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package metrics
 
 import (
diff --git a/metropolis/node/core/metrics/fake_exporter/fake_exporter.go b/metropolis/node/core/metrics/fake_exporter/fake_exporter.go
index 919851e..c289c60 100644
--- a/metropolis/node/core/metrics/fake_exporter/fake_exporter.go
+++ b/metropolis/node/core/metrics/fake_exporter/fake_exporter.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // fake_exporter is a tiny Prometheus-compatible metrics exporter which exports a
 // single metric with a value configured at startup. It is used to test the
 // metrics service.
diff --git a/metropolis/node/core/metrics/metrics.go b/metropolis/node/core/metrics/metrics.go
index b07a980..9abed54 100644
--- a/metropolis/node/core/metrics/metrics.go
+++ b/metropolis/node/core/metrics/metrics.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package metrics
 
 import (
diff --git a/metropolis/node/core/metrics/metrics_test.go b/metropolis/node/core/metrics/metrics_test.go
index fb5e3dc..b7c3eab 100644
--- a/metropolis/node/core/metrics/metrics_test.go
+++ b/metropolis/node/core/metrics/metrics_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package metrics
 
 import (
diff --git a/metropolis/node/core/mgmt/mgmt.go b/metropolis/node/core/mgmt/mgmt.go
index b0632bb..78961f2 100644
--- a/metropolis/node/core/mgmt/mgmt.go
+++ b/metropolis/node/core/mgmt/mgmt.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package mgmt implements the node-local management service, a.k.a.
 // metropolis.proto.api.NodeManagement.
 package mgmt
diff --git a/metropolis/node/core/mgmt/power.go b/metropolis/node/core/mgmt/power.go
index 9273ab3..6a3a8f2 100644
--- a/metropolis/node/core/mgmt/power.go
+++ b/metropolis/node/core/mgmt/power.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package mgmt
 
 import (
diff --git a/metropolis/node/core/mgmt/svc_logs.go b/metropolis/node/core/mgmt/svc_logs.go
index 6e27bf8..7a6ded5 100644
--- a/metropolis/node/core/mgmt/svc_logs.go
+++ b/metropolis/node/core/mgmt/svc_logs.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package mgmt
 
 import (
diff --git a/metropolis/node/core/mgmt/svc_logs_test.go b/metropolis/node/core/mgmt/svc_logs_test.go
index e91d2a3..f778084 100644
--- a/metropolis/node/core/mgmt/svc_logs_test.go
+++ b/metropolis/node/core/mgmt/svc_logs_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package mgmt
 
 import (
diff --git a/metropolis/node/core/mgmt/update.go b/metropolis/node/core/mgmt/update.go
index 6a7e13e..de9b876 100644
--- a/metropolis/node/core/mgmt/update.go
+++ b/metropolis/node/core/mgmt/update.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package mgmt
 
 import (
diff --git a/metropolis/node/core/mounts.go b/metropolis/node/core/mounts.go
index 02173c5..8b23b72 100644
--- a/metropolis/node/core/mounts.go
+++ b/metropolis/node/core/mounts.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/node/core/network/dhcp4c/callback/callback.go b/metropolis/node/core/network/dhcp4c/callback/callback.go
index 2acc539..39c8ef1 100644
--- a/metropolis/node/core/network/dhcp4c/callback/callback.go
+++ b/metropolis/node/core/network/dhcp4c/callback/callback.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package callback contains minimal callbacks for configuring the kernel with
 // options received over DHCP.
diff --git a/metropolis/node/core/network/dhcp4c/callback/callback_test.go b/metropolis/node/core/network/dhcp4c/callback/callback_test.go
index 3045f47..d9735df 100644
--- a/metropolis/node/core/network/dhcp4c/callback/callback_test.go
+++ b/metropolis/node/core/network/dhcp4c/callback/callback_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package callback
 
diff --git a/metropolis/node/core/network/dhcp4c/dhcpc.go b/metropolis/node/core/network/dhcp4c/dhcpc.go
index 2b21cd0..dff272b 100644
--- a/metropolis/node/core/network/dhcp4c/dhcpc.go
+++ b/metropolis/node/core/network/dhcp4c/dhcpc.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package dhcp4c implements a DHCPv4 Client as specified in RFC2131 (with some
 // notable deviations).  It implements only the DHCP state machine itself, any
diff --git a/metropolis/node/core/network/dhcp4c/dhcpc_test.go b/metropolis/node/core/network/dhcp4c/dhcpc_test.go
index d9d5dd2..45be1a4 100644
--- a/metropolis/node/core/network/dhcp4c/dhcpc_test.go
+++ b/metropolis/node/core/network/dhcp4c/dhcpc_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package dhcp4c
 
diff --git a/metropolis/node/core/network/dhcp4c/doc.go b/metropolis/node/core/network/dhcp4c/doc.go
index 292bb28..622452b 100644
--- a/metropolis/node/core/network/dhcp4c/doc.go
+++ b/metropolis/node/core/network/dhcp4c/doc.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package dhcp4c provides a client implementation of the DHCPv4 protocol
 // (RFC2131) and a few extensions for Linux-based systems.
diff --git a/metropolis/node/core/network/dhcp4c/lease.go b/metropolis/node/core/network/dhcp4c/lease.go
index 5f1db6f..fefe092 100644
--- a/metropolis/node/core/network/dhcp4c/lease.go
+++ b/metropolis/node/core/network/dhcp4c/lease.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package dhcp4c
 
diff --git a/metropolis/node/core/network/dhcp4c/lease_test.go b/metropolis/node/core/network/dhcp4c/lease_test.go
index 070d1b6..5d233df 100644
--- a/metropolis/node/core/network/dhcp4c/lease_test.go
+++ b/metropolis/node/core/network/dhcp4c/lease_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package dhcp4c
 
diff --git a/metropolis/node/core/network/dhcp4c/transport/transport.go b/metropolis/node/core/network/dhcp4c/transport/transport.go
index deed14d..9a5ff14 100644
--- a/metropolis/node/core/network/dhcp4c/transport/transport.go
+++ b/metropolis/node/core/network/dhcp4c/transport/transport.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package transport contains Linux-based transports for the DHCP broadcast and
 // unicast specifications.
diff --git a/metropolis/node/core/network/dhcp4c/transport/transport_broadcast.go b/metropolis/node/core/network/dhcp4c/transport/transport_broadcast.go
index 7064255..b61af80 100644
--- a/metropolis/node/core/network/dhcp4c/transport/transport_broadcast.go
+++ b/metropolis/node/core/network/dhcp4c/transport/transport_broadcast.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package transport
 
diff --git a/metropolis/node/core/network/dhcp4c/transport/transport_unicast.go b/metropolis/node/core/network/dhcp4c/transport/transport_unicast.go
index 0876a82..b76e37c 100644
--- a/metropolis/node/core/network/dhcp4c/transport/transport_unicast.go
+++ b/metropolis/node/core/network/dhcp4c/transport/transport_unicast.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package transport
 
diff --git a/metropolis/node/core/network/hostsfile/hostsfile.go b/metropolis/node/core/network/hostsfile/hostsfile.go
index 2023eb3..e509935 100644
--- a/metropolis/node/core/network/hostsfile/hostsfile.go
+++ b/metropolis/node/core/network/hostsfile/hostsfile.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package hostsfile implements a service which owns and writes all node-local
 // files/interfaces used by the system to resolve the local node's name and the
 // names of other nodes in the cluster:
diff --git a/metropolis/node/core/network/main.go b/metropolis/node/core/network/main.go
index dd0023d..8b834ac 100644
--- a/metropolis/node/core/network/main.go
+++ b/metropolis/node/core/network/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package network
 
diff --git a/metropolis/node/core/network/neigh.go b/metropolis/node/core/network/neigh.go
index 33cf564..6058d0e 100644
--- a/metropolis/node/core/network/neigh.go
+++ b/metropolis/node/core/network/neigh.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package network
 
 import (
diff --git a/metropolis/node/core/network/quirks.go b/metropolis/node/core/network/quirks.go
index 547d91e..be30da4 100644
--- a/metropolis/node/core/network/quirks.go
+++ b/metropolis/node/core/network/quirks.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package network
 
 import (
diff --git a/metropolis/node/core/network/static.go b/metropolis/node/core/network/static.go
index 260b5a6..27c952a 100644
--- a/metropolis/node/core/network/static.go
+++ b/metropolis/node/core/network/static.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package network
 
 import (
diff --git a/metropolis/node/core/nodeparams.go b/metropolis/node/core/nodeparams.go
index 5aa6db8..edeb780 100644
--- a/metropolis/node/core/nodeparams.go
+++ b/metropolis/node/core/nodeparams.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/node/core/roleserve/roleserve.go b/metropolis/node/core/roleserve/roleserve.go
index e5e0d74..1f9604c 100644
--- a/metropolis/node/core/roleserve/roleserve.go
+++ b/metropolis/node/core/roleserve/roleserve.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package roleserve implements the roleserver/“Role Server”.
 //
 // The Role Server runs on every node and is responsible for running all of the
diff --git a/metropolis/node/core/roleserve/values.go b/metropolis/node/core/roleserve/values.go
index aa0c227..fda776c 100644
--- a/metropolis/node/core/roleserve/values.go
+++ b/metropolis/node/core/roleserve/values.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_clusternet.go b/metropolis/node/core/roleserve/worker_clusternet.go
index 6665b4a..3442030 100644
--- a/metropolis/node/core/roleserve/worker_clusternet.go
+++ b/metropolis/node/core/roleserve/worker_clusternet.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_controlplane.go b/metropolis/node/core/roleserve/worker_controlplane.go
index 9a2af52..74eb672 100644
--- a/metropolis/node/core/roleserve/worker_controlplane.go
+++ b/metropolis/node/core/roleserve/worker_controlplane.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_heartbeat.go b/metropolis/node/core/roleserve/worker_heartbeat.go
index ba5cecc..c31d203 100644
--- a/metropolis/node/core/roleserve/worker_heartbeat.go
+++ b/metropolis/node/core/roleserve/worker_heartbeat.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_hostsfile.go b/metropolis/node/core/roleserve/worker_hostsfile.go
index 54e2f49..7ba6e50 100644
--- a/metropolis/node/core/roleserve/worker_hostsfile.go
+++ b/metropolis/node/core/roleserve/worker_hostsfile.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_kubernetes.go b/metropolis/node/core/roleserve/worker_kubernetes.go
index cfab7cb..2bbbba8 100644
--- a/metropolis/node/core/roleserve/worker_kubernetes.go
+++ b/metropolis/node/core/roleserve/worker_kubernetes.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_metrics.go b/metropolis/node/core/roleserve/worker_metrics.go
index 8db7b4f..34f74ea 100644
--- a/metropolis/node/core/roleserve/worker_metrics.go
+++ b/metropolis/node/core/roleserve/worker_metrics.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_nodemgmt.go b/metropolis/node/core/roleserve/worker_nodemgmt.go
index 11f8faa..b6c6068 100644
--- a/metropolis/node/core/roleserve/worker_nodemgmt.go
+++ b/metropolis/node/core/roleserve/worker_nodemgmt.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_rolefetch.go b/metropolis/node/core/roleserve/worker_rolefetch.go
index 304451b..3900e12 100644
--- a/metropolis/node/core/roleserve/worker_rolefetch.go
+++ b/metropolis/node/core/roleserve/worker_rolefetch.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_statuspush.go b/metropolis/node/core/roleserve/worker_statuspush.go
index 2fd7b33..0557b4c 100644
--- a/metropolis/node/core/roleserve/worker_statuspush.go
+++ b/metropolis/node/core/roleserve/worker_statuspush.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/roleserve/worker_statuspush_test.go b/metropolis/node/core/roleserve/worker_statuspush_test.go
index 2e6024f..54683e7 100644
--- a/metropolis/node/core/roleserve/worker_statuspush_test.go
+++ b/metropolis/node/core/roleserve/worker_statuspush_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package roleserve
 
 import (
diff --git a/metropolis/node/core/rpc/client.go b/metropolis/node/core/rpc/client.go
index 72122b7..f364c5a 100644
--- a/metropolis/node/core/rpc/client.go
+++ b/metropolis/node/core/rpc/client.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/methodinfo.go b/metropolis/node/core/rpc/methodinfo.go
index 0a597fa..e294feb 100644
--- a/metropolis/node/core/rpc/methodinfo.go
+++ b/metropolis/node/core/rpc/methodinfo.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/peerinfo.go b/metropolis/node/core/rpc/peerinfo.go
index 55f949c..775623c 100644
--- a/metropolis/node/core/rpc/peerinfo.go
+++ b/metropolis/node/core/rpc/peerinfo.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/resolver/processor.go b/metropolis/node/core/rpc/resolver/processor.go
index ad29021..fc581a2 100644
--- a/metropolis/node/core/rpc/resolver/processor.go
+++ b/metropolis/node/core/rpc/resolver/processor.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package resolver
 
 import (
diff --git a/metropolis/node/core/rpc/resolver/resolver.go b/metropolis/node/core/rpc/resolver/resolver.go
index c06911b..51b9cdf 100644
--- a/metropolis/node/core/rpc/resolver/resolver.go
+++ b/metropolis/node/core/rpc/resolver/resolver.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package resolver
 
 import (
diff --git a/metropolis/node/core/rpc/resolver/resolver_test.go b/metropolis/node/core/rpc/resolver/resolver_test.go
index 075fd09..72da280 100644
--- a/metropolis/node/core/rpc/resolver/resolver_test.go
+++ b/metropolis/node/core/rpc/resolver/resolver_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package resolver
 
 import (
diff --git a/metropolis/node/core/rpc/resolver/watcher.go b/metropolis/node/core/rpc/resolver/watcher.go
index c9fe47e..cb8f318 100644
--- a/metropolis/node/core/rpc/resolver/watcher.go
+++ b/metropolis/node/core/rpc/resolver/watcher.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package resolver
 
 import (
diff --git a/metropolis/node/core/rpc/server.go b/metropolis/node/core/rpc/server.go
index 3522822..ed8471a 100644
--- a/metropolis/node/core/rpc/server.go
+++ b/metropolis/node/core/rpc/server.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/server_authentication.go b/metropolis/node/core/rpc/server_authentication.go
index 37c8fad..03d5a96 100644
--- a/metropolis/node/core/rpc/server_authentication.go
+++ b/metropolis/node/core/rpc/server_authentication.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/server_authentication_test.go b/metropolis/node/core/rpc/server_authentication_test.go
index 8a869bd..a30ee86 100644
--- a/metropolis/node/core/rpc/server_authentication_test.go
+++ b/metropolis/node/core/rpc/server_authentication_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/trace.go b/metropolis/node/core/rpc/trace.go
index f27a311..9f3c22d 100644
--- a/metropolis/node/core/rpc/trace.go
+++ b/metropolis/node/core/rpc/trace.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/rpc/trace_test.go b/metropolis/node/core/rpc/trace_test.go
index 9bed935..50ba35e 100644
--- a/metropolis/node/core/rpc/trace_test.go
+++ b/metropolis/node/core/rpc/trace_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package rpc
 
 import (
diff --git a/metropolis/node/core/sysctl.go b/metropolis/node/core/sysctl.go
index 01b576c..2ff874e 100644
--- a/metropolis/node/core/sysctl.go
+++ b/metropolis/node/core/sysctl.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/node/core/tconsole/colors.go b/metropolis/node/core/tconsole/colors.go
index d1d5793..b488d92 100644
--- a/metropolis/node/core/tconsole/colors.go
+++ b/metropolis/node/core/tconsole/colors.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package tconsole
 
 import (
diff --git a/metropolis/node/core/tconsole/draw.go b/metropolis/node/core/tconsole/draw.go
index 4fec256..2c0979e 100644
--- a/metropolis/node/core/tconsole/draw.go
+++ b/metropolis/node/core/tconsole/draw.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package tconsole
 
 import (
diff --git a/metropolis/node/core/tconsole/page_logs.go b/metropolis/node/core/tconsole/page_logs.go
index d408d4d..525b4ce 100644
--- a/metropolis/node/core/tconsole/page_logs.go
+++ b/metropolis/node/core/tconsole/page_logs.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package tconsole
 
 import "github.com/gdamore/tcell/v2"
diff --git a/metropolis/node/core/tconsole/page_status.go b/metropolis/node/core/tconsole/page_status.go
index fbf4649..2843ddf 100644
--- a/metropolis/node/core/tconsole/page_status.go
+++ b/metropolis/node/core/tconsole/page_status.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package tconsole
 
 import (
diff --git a/metropolis/node/core/tconsole/standalone/main.go b/metropolis/node/core/tconsole/standalone/main.go
index d01ab4f..d9ceb18 100644
--- a/metropolis/node/core/tconsole/standalone/main.go
+++ b/metropolis/node/core/tconsole/standalone/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 // This is a standalone tconsole test application which works independently from
diff --git a/metropolis/node/core/tconsole/statusbar.go b/metropolis/node/core/tconsole/statusbar.go
index 06841c2..09ef10d 100644
--- a/metropolis/node/core/tconsole/statusbar.go
+++ b/metropolis/node/core/tconsole/statusbar.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package tconsole
 
 import (
diff --git a/metropolis/node/core/tconsole/tconsole.go b/metropolis/node/core/tconsole/tconsole.go
index b83a261..aa3df7b 100644
--- a/metropolis/node/core/tconsole/tconsole.go
+++ b/metropolis/node/core/tconsole/tconsole.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package tconsole
 
 import (
diff --git a/metropolis/node/core/time/time.go b/metropolis/node/core/time/time.go
index bd66e65..23400ef 100644
--- a/metropolis/node/core/time/time.go
+++ b/metropolis/node/core/time/time.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package time implements a supervisor runnable which is responsible for
 // keeping both the system clock and the RTC accurate.
 // Metropolis nodes need accurate time both for themselves (for log
diff --git a/metropolis/node/core/update/e2e/e2e_test.go b/metropolis/node/core/update/e2e/e2e_test.go
index 7679a69..f7d0e36 100644
--- a/metropolis/node/core/update/e2e/e2e_test.go
+++ b/metropolis/node/core/update/e2e/e2e_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package e2e
 
 import (
diff --git a/metropolis/node/core/update/e2e/testos/main.go b/metropolis/node/core/update/e2e/testos/main.go
index 4e7125b..39c019d 100644
--- a/metropolis/node/core/update/e2e/testos/main.go
+++ b/metropolis/node/core/update/e2e/testos/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/node/core/update/update.go b/metropolis/node/core/update/update.go
index ef302d1..0dbc485 100644
--- a/metropolis/node/core/update/update.go
+++ b/metropolis/node/core/update/update.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package update
 
 import (
diff --git a/metropolis/node/ids.go b/metropolis/node/ids.go
index b4ddf84..c9a9aa0 100644
--- a/metropolis/node/ids.go
+++ b/metropolis/node/ids.go
@@ -1,18 +1,5 @@
-// Copyright 2021 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package node
 
diff --git a/metropolis/node/kubernetes/apiproxy.go b/metropolis/node/kubernetes/apiproxy.go
index 0289111..01990ff 100644
--- a/metropolis/node/kubernetes/apiproxy.go
+++ b/metropolis/node/kubernetes/apiproxy.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (
diff --git a/metropolis/node/kubernetes/apiserver.go b/metropolis/node/kubernetes/apiserver.go
index 476c8bf..5471e02 100644
--- a/metropolis/node/kubernetes/apiserver.go
+++ b/metropolis/node/kubernetes/apiserver.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/authproxy/authproxy.go b/metropolis/node/kubernetes/authproxy/authproxy.go
index 9b24d19..7fdef76 100644
--- a/metropolis/node/kubernetes/authproxy/authproxy.go
+++ b/metropolis/node/kubernetes/authproxy/authproxy.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package authproxy implements an authenticating proxy in front of the K8s
 // API server converting Metropolis credentials into authentication headers.
 package authproxy
diff --git a/metropolis/node/kubernetes/clusternet/clusternet.go b/metropolis/node/kubernetes/clusternet/clusternet.go
index 30c15a1..9cf877b 100644
--- a/metropolis/node/kubernetes/clusternet/clusternet.go
+++ b/metropolis/node/kubernetes/clusternet/clusternet.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package clusternet implements a WireGuard-based overlay network for
 // Kubernetes. It relies on controller-manager's IPAM to assign IP ranges to
diff --git a/metropolis/node/kubernetes/containerd/main.go b/metropolis/node/kubernetes/containerd/main.go
index db544d6..bd39875 100644
--- a/metropolis/node/kubernetes/containerd/main.go
+++ b/metropolis/node/kubernetes/containerd/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package containerd
 
diff --git a/metropolis/node/kubernetes/controller-manager.go b/metropolis/node/kubernetes/controller-manager.go
index b1fdfc6..0223fd5 100644
--- a/metropolis/node/kubernetes/controller-manager.go
+++ b/metropolis/node/kubernetes/controller-manager.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/csi.go b/metropolis/node/kubernetes/csi.go
index c4e793d..fad0183 100644
--- a/metropolis/node/kubernetes/csi.go
+++ b/metropolis/node/kubernetes/csi.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/feature_gates.go b/metropolis/node/kubernetes/feature_gates.go
index 074aecd..5821101 100644
--- a/metropolis/node/kubernetes/feature_gates.go
+++ b/metropolis/node/kubernetes/feature_gates.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (
diff --git a/metropolis/node/kubernetes/feature_gates_test.go b/metropolis/node/kubernetes/feature_gates_test.go
index 3cccd14..0efb356 100644
--- a/metropolis/node/kubernetes/feature_gates_test.go
+++ b/metropolis/node/kubernetes/feature_gates_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (
diff --git a/metropolis/node/kubernetes/hyperkube/main.go b/metropolis/node/kubernetes/hyperkube/main.go
index 0809fa4..5c76acf 100644
--- a/metropolis/node/kubernetes/hyperkube/main.go
+++ b/metropolis/node/kubernetes/hyperkube/main.go
@@ -1,31 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/*
-Copyright 2014 The Kubernetes Authors.
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-    http://www.apache.org/licenses/LICENSE-2.0
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
 
 // This is the entry point for our multicall Kubernetes binary. It can act as
 // any of the Kubernetes components we use depending on its first argument.
diff --git a/metropolis/node/kubernetes/kubelet.go b/metropolis/node/kubernetes/kubelet.go
index 7a75ecf..e35157d 100644
--- a/metropolis/node/kubernetes/kubelet.go
+++ b/metropolis/node/kubernetes/kubelet.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/labelmaker.go b/metropolis/node/kubernetes/labelmaker.go
index 8cd513f..f08af95 100644
--- a/metropolis/node/kubernetes/labelmaker.go
+++ b/metropolis/node/kubernetes/labelmaker.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (
diff --git a/metropolis/node/kubernetes/metricsproxy/metricsproxy.go b/metropolis/node/kubernetes/metricsproxy/metricsproxy.go
index afa142d..1b98fa8 100644
--- a/metropolis/node/kubernetes/metricsproxy/metricsproxy.go
+++ b/metropolis/node/kubernetes/metricsproxy/metricsproxy.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package metricsproxy implements an authenticating proxy in front of the K8s
 // controller-manager and scheduler providing unauthenticated access to the
 // metrics via local ports
diff --git a/metropolis/node/kubernetes/nfproxy/nfproxy.go b/metropolis/node/kubernetes/nfproxy/nfproxy.go
index 8e0450b..b1616ad 100644
--- a/metropolis/node/kubernetes/nfproxy/nfproxy.go
+++ b/metropolis/node/kubernetes/nfproxy/nfproxy.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package nfproxy is a Kubernetes Service IP proxy based exclusively on the
 // Linux nftables interface.  It uses netfilter's NAT capabilities to accept
diff --git a/metropolis/node/kubernetes/pki/kubernetes.go b/metropolis/node/kubernetes/pki/kubernetes.go
index 5ea1e3e..2d67875 100644
--- a/metropolis/node/kubernetes/pki/kubernetes.go
+++ b/metropolis/node/kubernetes/pki/kubernetes.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // package pki builds upon osbase/pki/ to provide an
 // etcd-backed implementation of all x509 PKI Certificates/CAs required to run
diff --git a/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go b/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go
index d29112f..b75831a 100644
--- a/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go
+++ b/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // Package kvmdevice implements a Kubernetes device plugin for the virtual KVM
 // device. Using the device plugin API allows us to take advantage of the
diff --git a/metropolis/node/kubernetes/provisioner.go b/metropolis/node/kubernetes/provisioner.go
index f92acf2..1ec6f5d 100644
--- a/metropolis/node/kubernetes/provisioner.go
+++ b/metropolis/node/kubernetes/provisioner.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/reconciler/reconciler.go b/metropolis/node/kubernetes/reconciler/reconciler.go
index b791341..efc513e 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // The reconciler ensures that a base set of K8s resources is always available
 // in the cluster. These are necessary to ensure correct out-of-the-box
diff --git a/metropolis/node/kubernetes/reconciler/reconciler_status.go b/metropolis/node/kubernetes/reconciler/reconciler_status.go
index b139e0a..b516207 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler_status.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler_status.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package reconciler
 
 import (
diff --git a/metropolis/node/kubernetes/reconciler/reconciler_status_test.go b/metropolis/node/kubernetes/reconciler/reconciler_status_test.go
index 9eedfbe..f9d839f 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler_status_test.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler_status_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package reconciler
 
 import (
diff --git a/metropolis/node/kubernetes/reconciler/reconciler_test.go b/metropolis/node/kubernetes/reconciler/reconciler_test.go
index 5116b0a..a905648 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler_test.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler_test.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package reconciler
 
diff --git a/metropolis/node/kubernetes/reconciler/resources_csi.go b/metropolis/node/kubernetes/reconciler/resources_csi.go
index 2754528..c909854 100644
--- a/metropolis/node/kubernetes/reconciler/resources_csi.go
+++ b/metropolis/node/kubernetes/reconciler/resources_csi.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package reconciler
 
diff --git a/metropolis/node/kubernetes/reconciler/resources_rbac.go b/metropolis/node/kubernetes/reconciler/resources_rbac.go
index 42cd202..60d1ba4 100644
--- a/metropolis/node/kubernetes/reconciler/resources_rbac.go
+++ b/metropolis/node/kubernetes/reconciler/resources_rbac.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package reconciler
 
diff --git a/metropolis/node/kubernetes/reconciler/resources_runtimeclass.go b/metropolis/node/kubernetes/reconciler/resources_runtimeclass.go
index 070cb96..2fde6f0 100644
--- a/metropolis/node/kubernetes/reconciler/resources_runtimeclass.go
+++ b/metropolis/node/kubernetes/reconciler/resources_runtimeclass.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package reconciler
 
diff --git a/metropolis/node/kubernetes/reconciler/resources_storageclass.go b/metropolis/node/kubernetes/reconciler/resources_storageclass.go
index 6b4ec73..1a1dda1 100644
--- a/metropolis/node/kubernetes/reconciler/resources_storageclass.go
+++ b/metropolis/node/kubernetes/reconciler/resources_storageclass.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package reconciler
 
diff --git a/metropolis/node/kubernetes/scheduler.go b/metropolis/node/kubernetes/scheduler.go
index d058970..7455869 100644
--- a/metropolis/node/kubernetes/scheduler.go
+++ b/metropolis/node/kubernetes/scheduler.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/service_controller.go b/metropolis/node/kubernetes/service_controller.go
index 02cce8c..b91c455 100644
--- a/metropolis/node/kubernetes/service_controller.go
+++ b/metropolis/node/kubernetes/service_controller.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/node/kubernetes/service_worker.go b/metropolis/node/kubernetes/service_worker.go
index c07217f..e65d39b 100644
--- a/metropolis/node/kubernetes/service_worker.go
+++ b/metropolis/node/kubernetes/service_worker.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (
diff --git a/metropolis/node/labels.go b/metropolis/node/labels.go
index b829302..6b95db9 100644
--- a/metropolis/node/labels.go
+++ b/metropolis/node/labels.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package node
 
 import (
diff --git a/metropolis/node/labels_test.go b/metropolis/node/labels_test.go
index 0457b1e..08c27bb 100644
--- a/metropolis/node/labels_test.go
+++ b/metropolis/node/labels_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package node
 
 import (
diff --git a/metropolis/node/net_ips.go b/metropolis/node/net_ips.go
index 27bc4b1..415f84d 100644
--- a/metropolis/node/net_ips.go
+++ b/metropolis/node/net_ips.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package node
 
 import "net"
diff --git a/metropolis/node/net_protocols.go b/metropolis/node/net_protocols.go
index 26dd0c0..f3e69b8 100644
--- a/metropolis/node/net_protocols.go
+++ b/metropolis/node/net_protocols.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package node
 
 // These are netlink protocol numbers used internally for various netlink
diff --git a/metropolis/node/ports.go b/metropolis/node/ports.go
index f46e4db..014eb90 100644
--- a/metropolis/node/ports.go
+++ b/metropolis/node/ports.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package node
 
diff --git a/metropolis/node/tools/tools.go b/metropolis/node/tools/tools.go
index aec9de4..5377496 100644
--- a/metropolis/node/tools/tools.go
+++ b/metropolis/node/tools/tools.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 //go:build tools
 // +build tools
 
diff --git a/metropolis/node/validation.go b/metropolis/node/validation.go
index cf6d520..982740c 100644
--- a/metropolis/node/validation.go
+++ b/metropolis/node/validation.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package node
 
 import (
diff --git a/metropolis/node/validation_test.go b/metropolis/node/validation_test.go
index 1a9765e..1a5f84d 100644
--- a/metropolis/node/validation_test.go
+++ b/metropolis/node/validation_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package node
 
 import (
diff --git a/metropolis/proto/api/gomod-generated-placeholder.go b/metropolis/proto/api/gomod-generated-placeholder.go
index 778f64e..da08b30 100644
--- a/metropolis/proto/api/gomod-generated-placeholder.go
+++ b/metropolis/proto/api/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package api
diff --git a/metropolis/proto/common/gomod-generated-placeholder.go b/metropolis/proto/common/gomod-generated-placeholder.go
index 805d0c7..6c06f8c 100644
--- a/metropolis/proto/common/gomod-generated-placeholder.go
+++ b/metropolis/proto/common/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package common
diff --git a/metropolis/proto/ext/gomod-generated-placeholder.go b/metropolis/proto/ext/gomod-generated-placeholder.go
index b39f0bb..5373719 100644
--- a/metropolis/proto/ext/gomod-generated-placeholder.go
+++ b/metropolis/proto/ext/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package ext
diff --git a/metropolis/proto/private/gomod-generated-placeholder.go b/metropolis/proto/private/gomod-generated-placeholder.go
index 735e4dc..b4ed19a 100644
--- a/metropolis/proto/private/gomod-generated-placeholder.go
+++ b/metropolis/proto/private/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package private
diff --git a/metropolis/test/e2e/httpserver/main.go b/metropolis/test/e2e/httpserver/main.go
index 3b593db..be83934 100644
--- a/metropolis/test/e2e/httpserver/main.go
+++ b/metropolis/test/e2e/httpserver/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // httpserver serves a test HTTP endpoint for E2E testing.
 package main
 
diff --git a/metropolis/test/e2e/k8s_cts/main.go b/metropolis/test/e2e/k8s_cts/main.go
index b9818b3..de0bbcc 100644
--- a/metropolis/test/e2e/k8s_cts/main.go
+++ b/metropolis/test/e2e/k8s_cts/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // This package launches a Metropolis cluster with two nodes and spawns in the
 // CTS container. Then it streams its output to the console. When the CTS has
diff --git a/metropolis/test/e2e/persistentvolume/main.go b/metropolis/test/e2e/persistentvolume/main.go
index d9ff958..c80700a 100644
--- a/metropolis/test/e2e/persistentvolume/main.go
+++ b/metropolis/test/e2e/persistentvolume/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // This is a test for PersistentVolumes provided by our provisioner. It tests
 // that volumes have the right mount flags, and the expected quotas.
 //
diff --git a/metropolis/test/e2e/preseedtest/main.go b/metropolis/test/e2e/preseedtest/main.go
index 77fcba6..baeb1e5 100644
--- a/metropolis/test/e2e/preseedtest/main.go
+++ b/metropolis/test/e2e/preseedtest/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/test/e2e/selftest/main.go b/metropolis/test/e2e/selftest/main.go
index 2603eae..3b31c5b 100644
--- a/metropolis/test/e2e/selftest/main.go
+++ b/metropolis/test/e2e/selftest/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/test/e2e/suites/core/run_test.go b/metropolis/test/e2e/suites/core/run_test.go
index 7a07b1e..692969d 100644
--- a/metropolis/test/e2e/suites/core/run_test.go
+++ b/metropolis/test/e2e/suites/core/run_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package test_core
 
 import (
diff --git a/metropolis/test/e2e/suites/ha/run_test.go b/metropolis/test/e2e/suites/ha/run_test.go
index f2f7cc2..b56e40c 100644
--- a/metropolis/test/e2e/suites/ha/run_test.go
+++ b/metropolis/test/e2e/suites/ha/run_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package ha
 
 import (
diff --git a/metropolis/test/e2e/suites/ha_cold/run_test.go b/metropolis/test/e2e/suites/ha_cold/run_test.go
index ae6a043..0684a0b 100644
--- a/metropolis/test/e2e/suites/ha_cold/run_test.go
+++ b/metropolis/test/e2e/suites/ha_cold/run_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package ha_cold
 
 import (
diff --git a/metropolis/test/e2e/suites/kubernetes/kubernetes_helpers.go b/metropolis/test/e2e/suites/kubernetes/kubernetes_helpers.go
index c8e04bf..1f45fab 100644
--- a/metropolis/test/e2e/suites/kubernetes/kubernetes_helpers.go
+++ b/metropolis/test/e2e/suites/kubernetes/kubernetes_helpers.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package kubernetes
 
diff --git a/metropolis/test/e2e/suites/kubernetes/run_test.go b/metropolis/test/e2e/suites/kubernetes/run_test.go
index 0c116f6..0acc473 100644
--- a/metropolis/test/e2e/suites/kubernetes/run_test.go
+++ b/metropolis/test/e2e/suites/kubernetes/run_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package kubernetes
 
 import (
diff --git a/metropolis/test/lacp/lacp_test.go b/metropolis/test/lacp/lacp_test.go
index dbcc79e..f28302c 100644
--- a/metropolis/test/lacp/lacp_test.go
+++ b/metropolis/test/lacp/lacp_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package lacp contains an integration test for our custom LACP patches.
 // It tests relevant behavior that other parts of the Monogon network stack
 // rely on, like proper carrier state indications.
diff --git a/metropolis/test/launch/cli/launch-cluster/main.go b/metropolis/test/launch/cli/launch-cluster/main.go
index f5e0537..1aec556 100644
--- a/metropolis/test/launch/cli/launch-cluster/main.go
+++ b/metropolis/test/launch/cli/launch-cluster/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/test/launch/cli/launch/main.go b/metropolis/test/launch/cli/launch/main.go
index eb3f003..b4acd68 100644
--- a/metropolis/test/launch/cli/launch/main.go
+++ b/metropolis/test/launch/cli/launch/main.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
diff --git a/metropolis/test/launch/cluster.go b/metropolis/test/launch/cluster.go
index 20c3c67..dab453b 100644
--- a/metropolis/test/launch/cluster.go
+++ b/metropolis/test/launch/cluster.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // cluster builds on the launch package and implements launching Metropolis
 // nodes and clusters in a virtualized environment using qemu. It's kept in a
 // separate package as it depends on a Metropolis node image, which might not be
diff --git a/metropolis/test/launch/insecure_key.go b/metropolis/test/launch/insecure_key.go
index 72af26f..3c39835 100644
--- a/metropolis/test/launch/insecure_key.go
+++ b/metropolis/test/launch/insecure_key.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package launch
 
diff --git a/metropolis/test/launch/launch.go b/metropolis/test/launch/launch.go
index d6c29fe..759bf28 100644
--- a/metropolis/test/launch/launch.go
+++ b/metropolis/test/launch/launch.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package launch
 
 import (
diff --git a/metropolis/test/launch/metroctl.go b/metropolis/test/launch/metroctl.go
index 711855b..0d33849 100644
--- a/metropolis/test/launch/metroctl.go
+++ b/metropolis/test/launch/metroctl.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package launch
 
 import (
diff --git a/metropolis/test/launch/prefixed_stdio.go b/metropolis/test/launch/prefixed_stdio.go
index c851c44..2e4bbd2 100644
--- a/metropolis/test/launch/prefixed_stdio.go
+++ b/metropolis/test/launch/prefixed_stdio.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package launch
 
 import (
diff --git a/metropolis/test/launch/swtpm.go b/metropolis/test/launch/swtpm.go
index 5691c86..3c48227 100644
--- a/metropolis/test/launch/swtpm.go
+++ b/metropolis/test/launch/swtpm.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package launch
 
 import (
diff --git a/metropolis/test/localregistry/localregistry.go b/metropolis/test/localregistry/localregistry.go
index 120eb61..1f648e0 100644
--- a/metropolis/test/localregistry/localregistry.go
+++ b/metropolis/test/localregistry/localregistry.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // Package localregistry implements a read-only OCI Distribution / Docker
 // V2 container image registry backed by local layers.
 package localregistry
diff --git a/metropolis/test/localregistry/spec/gomod-generated-placeholder.go b/metropolis/test/localregistry/spec/gomod-generated-placeholder.go
index f09cd57..ca2145c 100644
--- a/metropolis/test/localregistry/spec/gomod-generated-placeholder.go
+++ b/metropolis/test/localregistry/spec/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package spec
diff --git a/metropolis/test/nanoswitch/nanoswitch.go b/metropolis/test/nanoswitch/nanoswitch.go
index ca1d77d..9ca2ff8 100644
--- a/metropolis/test/nanoswitch/nanoswitch.go
+++ b/metropolis/test/nanoswitch/nanoswitch.go
@@ -1,18 +1,5 @@
-// Copyright 2020 The Monogon Project Authors.
-//
+// Copyright The Monogon Project Authors.
 // SPDX-License-Identifier: Apache-2.0
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 // nanoswitch is a virtualized switch/router combo intended for testing.
 // It uses the first interface as an external interface to connect to the host
diff --git a/metropolis/test/nanoswitch/socks.go b/metropolis/test/nanoswitch/socks.go
index 1230903..4ba1d0a 100644
--- a/metropolis/test/nanoswitch/socks.go
+++ b/metropolis/test/nanoswitch/socks.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/test/swtpm/certtool/main.go b/metropolis/test/swtpm/certtool/main.go
index 5079c54..600d9aa 100644
--- a/metropolis/test/swtpm/certtool/main.go
+++ b/metropolis/test/swtpm/certtool/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 // Minimal GnuTLS certtool-like tool in Go. Implements only what's needed for
diff --git a/metropolis/test/swtpm/swtpm_cert/asn1.go b/metropolis/test/swtpm/swtpm_cert/asn1.go
index 4136a25..1fe87ee 100644
--- a/metropolis/test/swtpm/swtpm_cert/asn1.go
+++ b/metropolis/test/swtpm/swtpm_cert/asn1.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 import (
diff --git a/metropolis/test/swtpm/swtpm_cert/main.go b/metropolis/test/swtpm/swtpm_cert/main.go
index 8d5663b..e6d1a01 100644
--- a/metropolis/test/swtpm/swtpm_cert/main.go
+++ b/metropolis/test/swtpm/swtpm_cert/main.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package main
 
 // swtpm_cert (from swtpm project) reimplemented in Go.
diff --git a/metropolis/test/util/curator.go b/metropolis/test/util/curator.go
index 28fa7b1..35c0b97 100644
--- a/metropolis/test/util/curator.go
+++ b/metropolis/test/util/curator.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package util
 
 import (
diff --git a/metropolis/test/util/rpc.go b/metropolis/test/util/rpc.go
index c31c935..e2558a3 100644
--- a/metropolis/test/util/rpc.go
+++ b/metropolis/test/util/rpc.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package util
 
 import (
diff --git a/metropolis/test/util/runners.go b/metropolis/test/util/runners.go
index 95de02a..4a8a1e9 100644
--- a/metropolis/test/util/runners.go
+++ b/metropolis/test/util/runners.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 // This file implements test helper functions that augment the way any given
 // test is run.
 package util
diff --git a/metropolis/version/gomod-generated-placeholder.go b/metropolis/version/gomod-generated-placeholder.go
index f37d99d..7b00a96 100644
--- a/metropolis/version/gomod-generated-placeholder.go
+++ b/metropolis/version/gomod-generated-placeholder.go
@@ -1 +1,4 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
 package version