Value,Name,Reference
0,Reserved,
1,Maximum Number of Prefixes Reached,[RFC4486]
2,Administrative Shutdown,[RFC4486][RFC9003]
3,Peer De-configured,[RFC4486]
4,Administrative Reset,[RFC4486][RFC9003]
5,Connection Rejected,[RFC4486]
6,Other Configuration Change,[RFC4486]
7,Connection Collision Resolution,[RFC4486]
8,Out of Resources,[RFC4486]
9,Hard Reset,[RFC8538]
10,BFD Down,[RFC9384]
11-255,Unassigned,