Value,Description,Reference
0,Reserved,[RFC9516]
1,Do Not Reply,[RFC9516]
2,Reply via an IPv4/IPv6 UDP Packet,[RFC9516]
3,Unassigned,
4,Reply via Specified Path,[RFC9516]
5,Reply via an IPv4/IPv6 UDP Packet with the data integrity protection,[RFC9516]
6,Unassigned,
7,Reply via Specified Path with the data integrity protection,[RFC9516]
8-239,Unassigned,
240-251,Reserved for Experimental Use,[RFC9516]
252-254,Reserved for Private Use,[RFC9516]
255,Reserved,[RFC9516]