anchor.diff:          (assertValueOneOf "Encapsulation" ["FooOverUDP" "GenericUDPEncapsulation"])
           (assertValueOneOf "ISATAP" boolValues)
           (assertValueOneOf "SerializeTunneledPackets" boolValues)
  +        (assertInt "ERSPANIndex")
           (assertRange "ERSPANIndex" 1 1048575)
         ];
   
  
positive.code:           "Endpoint"
            "PersistentKeepalive"
          ])
          (assertRange "PersistentKeepalive" 0 65535)
        ];
  
  
negative.code:         (assertValueOneOf "RequestBroadcast" boolValues)
          (assertInt "RouteMetric")
          (assertInt "RouteTable")
          (assertRange "RouteTable" 0 4294967295)
          (assertByteFormat "RouteMTUBytes")
          (assertPort "ListenPort")
          (assertValueOneOf "SendRelease" boolValues)
  