diff --git a/metropolis/node/net_status.go b/metropolis/node/net_status.go
new file mode 100644
index 0000000..8bedfe4
--- /dev/null
+++ b/metropolis/node/net_status.go
@@ -0,0 +1,14 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package node
+
+import "net"
+
+// NetStatus is the current network status of the host. It will be updated by the
+// network Service whenever the node's network configuration changes. Spurious
+// changes might occur, consumers should ensure that the change that occured is
+// meaningful to them.
+type NetStatus struct {
+	ExternalAddress net.IP
+}