icmp response code

code type description
0 0 echo-reply
3 0 net-unreachable
3 1 host-unreachable
3 2 protocol-unreachable
3 3 port-unreachable
3 4 fragmentation-df-set
3 5 source-route-failed
3 6 dest-network-unknown
3 7 dest-port-unknown
3 8 source-host-isolated
3 9 network-administratively prohibited
3 10 host-administratively prohibited
3 11 Destination Network Unreachable for Type of Service
3 12 Destination Host Unreachable for Type of Service
3 13 Communication Administratively Prohibited
3 14 Host Precedence Violation
3 15 Precedence cutoff in effect
4 0 Source Quench
5 0 Redirect-network
5 1 Redirect-host
5 2 Redirect-service-network
5 3 Redirect-service-host
6 0 alternate-host-address
8 0 echo-request
9 0 router-advertisement
10 0 router-selection
11 0 ttl-exceeded
11 1 fragment-reassembly-exceeded
12 0 pointer-error
12 1 missing-option
12 2 bad-length
13 0 timestamp-request
14 0 timestamp-reply
15 0 info-request
16 0 info-reply
17 0 mask-request
18 0 mask-reply
30 0 traceroute-forwarded
30 1 packet-discarded
31 0 datagram-conversion-error
32 0 mobile-host-redirect
33 0 ipv6-where-are-you
34 0 ipv6-here-I-am
35 0 mobile-registration-request
36 0 mobile-registration-reply
37 0 domain-name-request
38 0 domain-name-reply
40 0 bad-spi
40 1 authentication-failed
40 2 decompression-failed
40 3 decryption-failed
40 4 need-authentication
40 5 need-authorization

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