ICMPv6 Parameter Problem Messages
The ICMPv6 Destination Unreachable, Packet Too Big, and Time Exceeded messages described in the previous sections are used to indicate specific error conditions to the original sender of a datagram. Recognizing that a router or host may encounter some other problem in processing a datagram that is not covered by any of these message types, ICMPv6 includes a generic error message type, just as ICMPv4 did. This is called the ICMPv6 Parameter Problem message.
As the name suggests, a Parameter Problem message indicates that a device found a problem with a parameter (another name for a datagram field) while attempting to work its way through the header (or headers) in an IPv6 datagram. This message is generated only ...
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