diff --git a/feature/buildfeatures/feature_cachenetmap_disabled.go b/feature/buildfeatures/feature_cachenetmap_disabled.go
new file mode 100644
index 000000000..22407fe38
--- /dev/null
+++ b/feature/buildfeatures/feature_cachenetmap_disabled.go
@@ -0,0 +1,13 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// Code generated by gen.go; DO NOT EDIT.
+
+//go:build ts_omit_cachenetmap
+
+package buildfeatures
+
+// HasCacheNetMap is whether the binary was built with support for modular feature "Cache the netmap on disk between runs".
+// Specifically, it's whether the binary was NOT built with the "ts_omit_cachenetmap" build tag.
+// It's a const so it can be used for dead code elimination.
+const HasCacheNetMap = false
diff --git a/feature/buildfeatures/feature_cachenetmap_enabled.go b/feature/buildfeatures/feature_cachenetmap_enabled.go
new file mode 100644
index 000000000..02663c416
--- /dev/null
+++ b/feature/buildfeatures/feature_cachenetmap_enabled.go
@@ -0,0 +1,13 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// Code generated by gen.go; DO NOT EDIT.
+
+//go:build !ts_omit_cachenetmap
+
+package buildfeatures
+
+// HasCacheNetMap is whether the binary was built with support for modular feature "Cache the netmap on disk between runs".
+// Specifically, it's whether the binary was NOT built with the "ts_omit_cachenetmap" build tag.
+// It's a const so it can be used for dead code elimination.
+const HasCacheNetMap = true
diff --git a/feature/featuretags/featuretags.go b/feature/featuretags/featuretags.go
index c93e8b15b..44b129576 100644
--- a/feature/featuretags/featuretags.go
+++ b/feature/featuretags/featuretags.go
@@ -123,6 +123,10 @@ var Features = map[FeatureTag]FeatureMeta{
 		Desc:                 "Control-to-node (C2N) support",
 		ImplementationDetail: true,
 	},
+	"cachenetmap": {
+		Sym:  "CacheNetMap",
+		Desc: "Cache the netmap on disk between runs",
+	},
 	"captiveportal": {Sym: "CaptivePortal", Desc: "Captive portal detection"},
 	"capture":       {Sym: "Capture", Desc: "Packet capture"},
 	"cli":           {Sym: "CLI", Desc: "embed the CLI into the tailscaled binary"},