Next Protocol,Description,Reference
0x00,None,[RFC8393]
0x01,IPv4,[RFC8300]
0x02,IPv6,[RFC8300]
0x03,Ethernet,[RFC8300]
0x04,NSH,[RFC8300]
0x05,MPLS,[RFC8300]
0x06,IOAM (Next protocol is an IOAM header),[RFC9452]
0x07,SFC Active OAM,[RFC9516]
0x08-0xFD,Unassigned,
0xFE,Experiment 1,[RFC8300]
0xFF,Experiment 2,[RFC8300]