Identifier,Name,Reference
0,Reserved,[RFC8480]
1,ADD,[RFC8480]
2,DELETE,[RFC8480]
3,RELOCATE,[RFC8480]
4,COUNT,[RFC8480]
5,LIST,[RFC8480]
6,SIGNAL,[RFC8480]
7,CLEAR,[RFC8480]
8-254,Unassigned,
255,Reserved,[RFC8480]