- MTU_PROTO_API_L3, /* Default payload MTU (without L2 headers) */
- MTU_PROTO_API_IP4, /* Per-protocol MTUs overriding default */
- MTU_PROTO_API_IP6,
- MTU_PROTO_API_MPLS,
- MTU_PROTO_API_N,
+ MTU_PROTO_API_L3 = 0, /* Default payload MTU (without L2 headers) */
+ MTU_PROTO_API_IP4 = 1, /* Per-protocol MTUs overriding default */
+ MTU_PROTO_API_IP6 = 2,
+ MTU_PROTO_API_MPLS = 3,