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==ICMPv6 Types and Codes==
==ICMPv6 Types and Codes==
Types 0-127 are defined as error messages, but only 0-4 are currently defined in RFC4433.
Types 0-127 are defined as error messages, but only 0-4 are currently defined in [http://tools.ietf.org/html/rfc4443 RFC4443].
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Types 128-255 are defined as informational messages. The most commonly used messages are listed below.
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TYPE DESCRIPTION CODE
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0 Reserved
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1 Destination Unreachable
0 - no route to destination
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
137 .. 255 See [http://www.iana.org/assignments/icmpv6-parameters IANA allocated ICMPv6 codes] for a complete list.
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