diff --git a/nixos/tests/systemd-initrd-bridge.nix b/nixos/tests/systemd-initrd-bridge.nix
index f0c7d5f98f7a..7548787bc18c 100644
--- a/nixos/tests/systemd-initrd-bridge.nix
+++ b/nixos/tests/systemd-initrd-bridge.nix
@@ -24,20 +24,23 @@
           serviceConfig.Type = "oneshot";
         };
 
-        networking.primaryIPAddress = "192.168.1.${toString config.virtualisation.test.nodeNumber}";
+        networking.primaryIPAddress = lib.mkForce "192.168.1.${toString config.virtualisation.test.nodeNumber}";
+
+        virtualisation.interfaces.eth1 = {
+          vlan = 1;
+          assignIP = false;
+        };
+        virtualisation.interfaces.eth2 = {
+          vlan = 2;
+          assignIP = false;
+        };
 
-        virtualisation.vlans = [
-          1
-          2
-        ];
         networking.bridges.br0.interfaces = [
           "eth1"
           "eth2"
         ];
 
         networking.interfaces = {
-          eth1.ipv4.addresses = lib.mkForce [ ];
-          eth2.ipv4.addresses = lib.mkForce [ ];
           br0.ipv4.addresses = [
             {
               address = config.networking.primaryIPAddress;