diff --git a/metropolis/test/nanoswitch/BUILD b/metropolis/test/nanoswitch/BUILD
new file mode 100644
index 0000000..fc4f932
--- /dev/null
+++ b/metropolis/test/nanoswitch/BUILD
@@ -0,0 +1,40 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+load("//metropolis/node/build:def.bzl", "smalltown_initramfs")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["nanoswitch.go"],
+    importpath = "git.monogon.dev/source/nexantic.git/metropolis/test/nanoswitch",
+    visibility = ["//visibility:private"],
+    deps = [
+        "//metropolis/node:go_default_library",
+        "//metropolis/node/common/supervisor:go_default_library",
+        "//metropolis/node/core/network/dhcp4c:go_default_library",
+        "//metropolis/node/core/network/dhcp4c/callback:go_default_library",
+        "//metropolis/test/launch:go_default_library",
+        "@com_github_google_nftables//:go_default_library",
+        "@com_github_google_nftables//expr:go_default_library",
+        "@com_github_insomniacslk_dhcp//dhcpv4:go_default_library",
+        "@com_github_insomniacslk_dhcp//dhcpv4/server4:go_default_library",
+        "@com_github_vishvananda_netlink//:go_default_library",
+        "@org_golang_x_sys//unix:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "nanoswitch",
+    embed = [":go_default_library"],
+    pure = "on",
+    visibility = ["//visibility:public"],
+)
+
+smalltown_initramfs(
+    name = "initramfs",
+    files = {
+        ":nanoswitch": "/init",
+
+        # CA Certificate bundle
+        "@cacerts//file": "/etc/ssl/cert.pem",
+    },
+    visibility = ["//visibility:public"],
+)