anchor.diff:            };
           };
         };
  -      nodes.client = { pkgs, ... }: with pkgs.lib; {
  +      nodes.client = { pkgs, lib, ... }: with lib; {
           virtualisation.vlans = [ 1 ];
           networking = {
             useNetworkd = networkd;
  
positive.code:     static = {
        name = "Static";
        nodes.router = router;
        nodes.client = { pkgs, ... }: with pkgs.lib; {
          virtualisation.vlans = [ 1 2 ];
          networking = {
            useNetworkd = networkd;
  
negative.code:         '';
      };
      bridge = let
        node = { address, vlan }: { pkgs, lib, ... }: with lib; {
          virtualisation.vlans = [ vlan ];
          networking = {
            useNetworkd = networkd;
  