anchor.diff:          ''
             [Link]
             ${attrsToSection def.linkConfig}
  +
  +          ${def.extraConfig}
           '';
       };
   
  
positive.code:             ${attrsToSection x.routeConfig}
  
            '')}
          '';
      };
  
  
negative.code:       '';
      };
  
      extraConfig = mkOption {
        default = "";
        type = types.lines;
        description = "Extra configuration append to unit";
      };
    };
  
    linkOptions = commonNetworkOptions // {
  