6. IANA Considerations

[IKEV2] defined many field types and values. IANA has already registered those types and values in [IKEV2IANA], so they are not listed here again.

Kaufman, et al. Standards Track [Page 124]  RFC 5996 IKEv2bis September 2010

Two items have been removed from the IKEv2 Configuration Payload Attribute Types table: INTERNAL_IP6_NBNS and INTERNAL_ADDRESS_EXPIRY.

Two new additions to the IKEv2 parameters "NOTIFY MESSAGES - ERROR TYPES" registry are defined here that were not defined in [IKEV2]:

43 TEMPORARY_FAILURE 44 CHILD_SA_NOT_FOUND

IANA has changed the existing IKEv2 Payload Types table from:

46 Encrypted E [IKEV2]

to

46 Encrypted and Authenticated SK [This document]

IANA has updated all references to RFC 4306 to point to this document.

6. To reduce the number of possible error states by making the

 protocol reliable (all messages are acknowledged) and sequenced.
 This allows shortening CREATE_CHILD_SA exchanges from 3 messages
 to 2;