diff --git a/util/linuxfw/iptables.go b/util/linuxfw/iptables.go
index 6e7633215..4930f68d1 100644
--- a/util/linuxfw/iptables.go
+++ b/util/linuxfw/iptables.go
@@ -1,7 +1,7 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-//go:build linux && !(386 || loong64)
+//go:build linux && !(386 || loong64 || arm || armbe)
 
 package linuxfw
 
diff --git a/util/linuxfw/linuxfw_struct_linux_test.go b/util/linuxfw/linuxfw_struct_linux_test.go
index ae9a2f7e5..95141c8b9 100644
--- a/util/linuxfw/linuxfw_struct_linux_test.go
+++ b/util/linuxfw/linuxfw_struct_linux_test.go
@@ -1,7 +1,7 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-//go:build linux && !(386 || loong64)
+//go:build linux && !(386 || loong64 || arm || armbe)
 
 package linuxfw
 
diff --git a/util/linuxfw/linuxfw_unsupported.go b/util/linuxfw/linuxfw_unsupported.go
index 819d39ca5..246b61147 100644
--- a/util/linuxfw/linuxfw_unsupported.go
+++ b/util/linuxfw/linuxfw_unsupported.go
@@ -1,10 +1,10 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-// NOTE: linux_386 and linux_loong64 are currently unsupported due to missing
+// NOTE: linux_{386,loong64,arm,armbe} are currently unsupported due to missing
 // support in upstream dependencies.
 
-//go:build !linux || (linux && (386 || loong64))
+//go:build !linux || (linux && (386 || loong64 || arm || armbe))
 
 package linuxfw
 
diff --git a/util/linuxfw/nftables.go b/util/linuxfw/nftables.go
index 35205975a..066ce12a1 100644
--- a/util/linuxfw/nftables.go
+++ b/util/linuxfw/nftables.go
@@ -1,7 +1,7 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-//go:build linux && !(386 || loong64)
+//go:build linux && !(386 || loong64 || arm || armbe)
 
 package linuxfw
 
diff --git a/util/linuxfw/nftables_types.go b/util/linuxfw/nftables_types.go
index 7af23baa1..90a70a8e1 100644
--- a/util/linuxfw/nftables_types.go
+++ b/util/linuxfw/nftables_types.go
@@ -1,7 +1,7 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-//go:build linux && !(386 || loong64)
+//go:build linux && !(386 || loong64 || arm || armbe)
 
 package linuxfw