diff --git a/machines/liminix/ap01/lan.nix b/machines/liminix/ap01/lan.nix
index 50603bf..b7cd923 100644
--- a/machines/liminix/ap01/lan.nix
+++ b/machines/liminix/ap01/lan.nix
@@ -27,7 +27,8 @@ in
     default-vlan = svc.vlan.build {
       ifname = "apinit";
       primary = config.services.int;
-      vid = "0";
+      # Default VLAN ("untagged") is 1.
+      vid = "1";
     };
 
     admin-vlan = svc.vlan.build {