RFC 4306, "Internet Key Exchange (IKEv2) Protocol", December 2005
Note: This RFC has been obsoleted by RFC 5996Source of RFC: ipsec (sec)
Errata ID: 2190
Status: Held for Document Update
Publication Format(s) : TEXT
Reported By: Constantin Hagemeier
Date Reported: 2010-04-28
Held for Document Update by: Sean Turner
Section 2.5. says:
Similarly, payload types that are not defined are reserved for future use; implementations of version 2.0 MUST skip over those payloads and ignore their contents.
It should say:
Similarly, payload types that are not defined are reserved for future use.
The behaviour of an implementation of version 2.0 depends on the critical flag. See next paragraph.