anchor.diff:        enable = mkEnableOption "BIND domain name server";
   
         cacheNetworks = mkOption {
  -        default = ["127.0.0.0/24"];
  +        default = [ "127.0.0.0/24" ];
           type = types.listOf types.str;
           description = "
             What networks are allowed to use us as a resolver.  Note
  
positive.code:     networking.resolvconf.useLocalResolver = mkDefault true;
  
      users.users.${bindUser} =
        { uid = config.ids.uids.bind;
          description = "BIND daemon user";
        };
  
  
negative.code:       slaves = mkOption {
          type = types.listOf types.str;
          description = "Addresses who may request zone transfers.";
          default = [ ];
        };
        extraConfig = mkOption {
          type = types.str;
  