References: RFC 4486
| Value | Defined by | Name | Description | References |
|---|---|---|---|---|
| 0 | IANA | Reserved | - | - |
| 1 | IANA | Maximum Number of Prefixes Reached | - | RFC 4486 |
| 2 | IANA | Administrative Shutdown | - | RFC 4486, RFC 9003 |
| 3 | IANA | Peer De-configured | - | RFC 4486 |
| 4 | IANA | Administrative Reset | - | RFC 4486, RFC 9003 |
| 5 | IANA | Connection Rejected | - | RFC 4486 |
| 6 | IANA | Other Configuration Change | - | RFC 4486 |
| 7 | IANA | Connection Collision Resolution | - | RFC 4486 |
| 8 | IANA | Out of Resources | - | RFC 4486 |
| 9 | IANA | Hard Reset | - | RFC 8538 |
| 10 | IANA | BFD Down | - | - |