Hi,

draft-ietf-ipsecme-ikev2-rename-esn-04 is in the RFC Editor queue now. It
has already passed IANA review
and the IANA actions listed in the draft were confirmed by the author (me).

However, in the process of IANA review of the G-IKEv2 draft, it came to
light that some needed IANA actions were 
missing from draft-ietf-ipsecme-ikev2-rename-esn-04. The G-IKEv2 draft
allocates a new value
for the renamed "Sequence Numbers" transform, but it appears that all
possible values apart
from the two already allocated for this transform are marked as "Reserved"
and cannot be used:
https://www.iana.org/assignments/ikev2-parameters/ikev2-parameters.xhtml#ike
v2-parameters-9

This registry is different from all other IKEv2 registries - it was created
in such a way, that no new
values can be allocated. The most probable reason for such a decision was
that this transform
type was originally intended to only indicate whether ESN was on or off, so
no other values
made sense, thus they were disabled to be allocated.

Since the purpose of draft-ietf-ipsecme-ikev2-rename-esn is to use this
transform type
for more flexible control of the sequence numbers behavior, we do want to be
able to allocate
more values for it (like the G-IKEv2 draft does). To allow this, the
"Reserved" range of values for this
registry should have been re-classified to "Unassigned" and "Private Use"
ranges
by draft-ietf-ipsecme-ikev2-rename-esn draft. That didn't happen due to
overlook
from my side (as the author and one of the designated experts). This was
also not noticed by reviewers.

The proposed solution, as it was discussed with the chairs (one of which is
the other designated expert for this registry) 
and with the responsible AD, is to request the RFC Editor to made the
following changes in 
draft-ietf-ipsecme-ikev2-rename-esn-04:

1. In the Section 5, after the item:

   *  The "Transform Type 5 - Extended Sequence Numbers Transform IDs"
      registry is renamed to "Transform Type 5 - Sequence Numbers
      Transform IDs".

     add a new item:

   *  The "Reserved" range of numbers in the "Transform Type 5 - Sequence
Numbers Transform IDs"
       registry is split into the "Unassigned" (2-1023) and the "Private
Use" (1024-65535) ranges,
       each referencing [RFCXXXX].

2. Add the following para at the end of Section 5:

      Numbers in the range 2-65635 were originally marked as "Reserved"
referencing [RFC7296],
      and were re-classified as "Unassigned" and "Private Use" by [RFCXXXX].


These changes would allow the IANA to make new allocations for this
registry,
thus the mission of the draft-ietf-ipsecme-ikev2-rename-esn draft would be
complete.

Since formally these are technical changes to the document that has already
passed all 
last calls and is in the RFC Editor queue, Tero and Deb asked me to inform
the WG
about the proposed changes. If anybody disagree with the proposed changes,
please chime in.
In this case another WGLC will have be needed.

Regards,
Valery.

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