ICMPv6 Types Codes
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A list of ICMPv6 packet types and codes taken from RFC4443.
ICMPv6 Types and Codes
Types 0-127 are defined as error messages, but only 0-4 are currently defined in RFC4443.
TYPE DESCRIPTION CODE ----------------------------------------------------- 0 Reserved ----------------------------------------------------- 1 Destination Unreachable 0 - no route to destination 1 - communication with destination administratively prohibited 2 - beyond scope of source address 3 - address unreachable 4 - port unreachable 5 - source address failed ingress/egress policy 6 - reject route to destination 7 - Error in Source Routing Header ----------------------------------------------------- 2 Packet Too Big 0 - Packet too big ----------------------------------------------------- 3 Time Exceeded 0 - hop limit exceeded in transit 1 - fragment reassembly time exceeded ----------------------------------------------------- 4 Parameter Problem 0 - erroneous header field encountered 1 - unrecognized Next Header type encountered 2 - unrecognized IPv6 option encountered -----------------------------------------------------
Types 128-255 are defined as informational messages. The most commonly used messages are listed below.
TYPE DESCRIPTION CODE ----------------------------------------------------- 128 Echo Request 0 - echo request (IPv6 ping) ----------------------------------------------------- 129 Echo Reply 0 - echo reply (IPv6 ping response) ----------------------------------------------------- 130 Multicast Listener Query 0 - Multicast Listener Query ----------------------------------------------------- 131 Multicast Listener Report 0 - Multicast Listener Report ----------------------------------------------------- 132 Multicast Listener Done 0 - Multicast Listener Done ----------------------------------------------------- 133 Router Solicitation 0 - Router Solicitation ----------------------------------------------------- 134 Router Advertisement 0 - Router Advertisement ----------------------------------------------------- 135 Neighbor Solicitation 0 - Neighbor Solicitation ----------------------------------------------------- 136 Neighbor Advertisement 0 - Neighbor Advertisement -----------------------------------------------------
See IANA allocated ICMPv6 codes for a complete list of ICMPv6 types and codes.
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