ICMPv6
Required for IPv6 to work correctly.
Header
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
┌───────────────┬───────────────┬───────────────────────────────┐
│ Type │ Code │ Checksum │
├───────────────┴───────────────┴───────────────────────────────┤
│ │
│ Message Body │
│ │
Error Messages
| Type | Purpose |
|---|---|
| 1 | Destination Unreachable |
| 2 | Packet Too Big |
| 3 | Time Exceeded |
| 4 | Parameter Problem |
Informational Messages
| Type | Purpose |
|---|---|
| 128 | Echo Request |
| 129 | Echo Reply |
References
RFC 4443 - Internet Control Message Protocol (ICMPv6) for IPv6