added for inet 4.3.x compatibility

Author: ZoltanBojthe

src/openflow/openflow/protocol/OpenFlow.h

@@ -10,6 +10,10 @@
 #error OpenFlow: Incompatible INET version. At least INET version v4.3.2 required.
 #endif
 
+#if INET_VERSION < 0x0404
+constexpr int ETHERTYPE_LLDP = 0x88CC;
+#endif
+
 #ifndef OFP_VERSION_IN_USE
     #define OFP_VERSION_IN_USE OFP_100
 #endif