anchor.diff:    if (beresp.http.Set-Cookie) {
       return(deliver);
     }
  +
  +  set beresp.http.x-url = req.url;
   }
   
   sub vcl_hash {
  
positive.code:     if (!client.ip ~ purge_acl) {
        error 405 "Not allowed";
      } else {
        ban("req.url == " + req.url);
        error 200 "Purged";
      }
    }
  
negative.code:   } else {
      set resp.http.X-Cache = "MISS";
    }
  
    unset resp.http.x-url;
  }
  
  sub vcl_error {
  