RFC 4306, "Internet Key Exchange (IKEv2) Protocol", December 2005

Note: This RFC has been obsoleted by RFC 5996

Note: This RFC has been updated by RFC 5282

Errata ID: 2192
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Constantin Hagemeier
Date Reported: 2010-04-28
Held for Document Update by: Sean Turner

Section 3.3. says:

If there are multiple transforms with the same Transform Type, the
proposal is an OR of those transforms.  If there are multiple
Transforms with different Transform Types, the proposal is an AND of
the different groups.  For example, to propose ESP with (3DES or

It should say:

If there are multiple transforms with the same Transform Type, those
transforms constitute a group out of which exactly one transform is
to be chosen. If there are multiple of those groups, the proposal is
an AND of the choices out of the different groups.  For example, to
propose ESP with (3DES or

Notes:

Logically unclear. OR means AND/OR. But here you talk about XOR.
Furthermore has AND precedence before OR.

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