Code,Message,Reference
0,Reserved,[RFC9301]
1,LISP Map-Request,[RFC9301]
2,LISP Map-Reply,[RFC9301]
3,LISP Map-Register,[RFC9301]
4,LISP Map-Notify,[RFC9301]
5,LISP Map-Notify-Ack,[RFC9301]
6,"LISP DDT Map-Referral (TEMPORARY - registered 2017-04-19, extension registered 2025-04-25, expires 2026-04-19)",[RFC8111]
7,Unassigned,
8,LISP Encapsulated Control Message,[RFC9301]
9-14,Unassigned,
15,LISP Shared Extension Message,[RFC9304]