anchor.diff:  
       networking.sits = mkOption {
         default = { };
  -      example = literalExample {
  -        hurricane = {
  -          remote = "10.0.0.1";
  -          local = "10.0.0.22";
  -          ttl = 255;
  -        };
  -        msipv6 = {
  -          remote = "192.168.0.1";
  -          dev = "enp3s0";
  -          ttl = 127;
  -        };
  -      };
  +      example = literalExample ''
  +        {
  +          hurricane = {
  +            remote = "10.0.0.1";
  +            local = "10.0.0.22";
  +            ttl = 255;
  +          };
  +          msipv6 = {
  +            remote = "192.168.0.1";
  +            dev = "enp3s0";
  +            ttl = 127;
  +          };
  +        }
  +      '';
         description = ''
           This option allows you to define 6-to-4 interfaces which should be automatically created.
         '';
  
positive.code: 
      networking.macvlans = mkOption {
        default = { };
        example = literalExample {
          wan = {
            interface = "enp2s0";
            mode = "vepa";
          };
        };
        description = ''
          This option allows you to define macvlan interfaces which should
          be automatically created.
  
negative.code: 
      networking.vlans = mkOption {
        default = { };
        example = literalExample ''
          {
            vlan0 = {
              id = 3;
              interface = "enp3s0";
            };
            vlan1 = {
              id = 1;
              interface = "wlan0";
            };
          }
        '';
        description =
          ''
            This option allows you to define vlan devices that tag packets
  