diff --git a/modules/vlan/service.nix b/modules/vlan/service.nix
index 01f3805..1311545 100644
--- a/modules/vlan/service.nix
+++ b/modules/vlan/service.nix
@@ -15,4 +15,5 @@ in oneshot rec {
     )
   '';
   down = "ip link set down dev ${ifname}";
+  dependencies = [ primary ];
 }