Type Number | Type Name | Code |
0 | Echo Reply | |
1 | Unassigned | |
2 | Unassigned | |
3 | Destination Unreachable | 0 Net Unreachable 1 Host Unreachable 2 Protocol Unreachable 3 Port Unreachable 4 Fragmentation Needed and Don't Fragment 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 Destination Host is Administratively Prohibited 11 Destination Network Unreachable for Type of Service 12 Destination Host Unreachable for Type of Service 13 Communication Administratively Prohibited 14 Host Precedence Violation 15 Precedence cutoff in effect |
4 | Source Quench | |
5 | Redirect | 0 Redirect Datagram for the Network (or subnet) 1 Redirect Datagram for the Host 2 Redirect Datagram for the Type of Service and Network 3 Redirect Datagram for the Type of Service and Host |
6 | Alternate Host Address | |
7 | Unassigned | |
8 | Echo | |
9 | Router Advertisement | |
10 | Router Selection | |
11 | Time Exceeded | 0 Time to Live exceeded in Transit 1 Fragment Reassembly Time Exceeded |
12 | Parameter Problem | 0 Pointer indicates the error 1 Missing a Required Option 2 Bad Length |
13 | Timestamp | |
14 | Timestand Reply | |
15 | Information Request | |
16 | Information Reply | |
17 | Address Mask Request | |
18 | Address Mask Reply | |
19 | REserved (for Security) | |
20 - 29 | Reserved (for Robustness Experiment) | |
30 | Traceroute | |
31 | Datagram Conversion Error | |
32 | Mobile Host Redirect | |
33 | IPv6 Where-Are-You | |
34 | IPv6 I-Am-Here | |
35 | Mobile Registration | |
36 | Mobile Registration Reply | |
37 | Domain Name Request | |
38 | Domain Name Reply | |
39 | SKIP | |
40 | Photuris | |
41 - 255 | Reserved |