0 - Echo Reply
RFC792
ICMP Echo Reply message.
3 - Destination Unreachable
RFC792, RFC1108, RFC1122, RFC1191, RFC1812, RFC4884
ICMP Destination Unreachable message.
4 - Source Quench
RFC792
ICMP Source Quench message.
5 - Redirect
RFC792
ICMP Redirect message.
8 - Echo
RFC792
ICMP Echo Request message.
9 - Router Advertisement
RFC1256
ICMP Router Advertisement message.
10 - Router Solicitation
RFC1256
ICMP Router Solicitation message.
11 - Time Exceeded
RFC792, RFC4884
ICMP Time Exceeded message.
12 - Parameter Problem
RFC792, RFC1108, RFC4883
ICMP Parameter Problem message.
13 - Timestamp
RFC792
ICMP Timestamp Request message.
14 - Timestamp Reply
RFC792
ICMP Timestamp Reply message.
15 - Information Request
RFC792
ICMP Information Request message.
16 - Information Reply
RFC792
ICMP Information Reply message.
17 - Address Mask Request
RFC950
ICMP Address Mask Request message.
18 - Address Mask Reply
RFC950
ICMP Address Mask Reply message.
30 - Traceroute
RFC1393
ICMP Traceroute message.
31 - Datagram Conversion Error
RFC1475
ICMP Datagram Conversion Error message.
37 - Domain Name Request
RFC1788
ICMP Domain Name Request message.
38 - Domain Name Reply
RFC1788
ICMP Domain Name Reply message.
40 - Security Failures (Photuris)
RFC2521
ICMP Security Failures message.
42 - Extended Echo Request
RFC8335
ICMP Extended Echo Request message.
43 - Extended Echo Reply
RFC8335
ICMP Extended Echo Reply message.
253 - RFC3692-style Experiment 1
RFC4727
ICMP Experimental message.
254 - RFC3692-style Experiment 2
RFC4727
ICMP Experimental message.