| Code |
ICMP Type 3 : Detination Unreachable 一覧 |
| 0 |
Net Unreachable |
| 1 |
Host Unreachable |
| 2 |
Protocol Unreachable |
| 3 |
Port Unreachable |
| 4 |
Fragmentation Needed and DF was Set |
| 5 |
Source Route Failed |
| 6 |
Destination Network Unknown |
| 7 |
Destination Host Unknown |
| 8 |
Source Host Isolated |
| 9 |
Communication with Destination Network is
Administratively Prohibited |
| 10 |
Communication with Destinaltion Host is Administratively
Prohibited |
| 11 |
Destination Network Unreachable for ToS |
| 12 |
Destination Host Unreachable for ToS |
| 13 |
Communication Administratively Prohibited |
| 14 |
Host Precedence Violation |
| 15 |
Precedence cutoff in effect |