2.2. Use of Sequence Numbers for Message ID
The Message ID is a 32-bit quantity, which is zero for the IKE_SA_INIT messages
(including retries of the message due to responses such as COOKIE and
INVALID_KE_PAYLOAD {{ Clarif-2.2 }}), and incremented for each subsequent
exchange.
Tero:
Add text:
The Message ID is reset to zero also after IKE SA rekey for the new IKE SA.
Paul: Not done. This is interesting, but should be discussed on the list.
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