diff --git a/nixos/tests/taskserver.nix b/nixos/tests/taskserver.nix
index 75be97a507d..d3f93dd1837 100644
--- a/nixos/tests/taskserver.nix
+++ b/nixos/tests/taskserver.nix
@@ -82,8 +82,9 @@ in {
       # This is to avoid assigning a different network address to the new
       # generation.
       networking = lib.mapAttrs (lib.const lib.mkForce) {
+        interfaces.eth1.ipv4 = nodes.server.config.networking.interfaces.eth1.ipv4;
         inherit (nodes.server.config.networking)
-          hostName interfaces primaryIPAddress extraHosts;
+          hostName primaryIPAddress extraHosts;
       };
     };