Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (IP Version 6 Addressing Architecture) to Internet Standard

Lorenzo Colitti <lorenzo@google.com> Thu, 16 February 2017 08:52 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 16 Feb 2017 17:52:07 +0900
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Subject: Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (IP Version 6 Addressing Architecture) to Internet Standard
To: Ole Troan <otroan@employees.org>
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Cc: 6man WG <ipv6@ietf.org>, IETF-Discussion Discussion <ietf@ietf.org>, Randy Bush <randy@psg.com>, draft-ietf-6man-rfc4291bis@ietf.org, 6man-chairs@ietf.org
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On Thu, Feb 16, 2017 at 5:40 PM, <otroan@employees.org>; wrote:

> See 7421, 6177, 7368, section 3.4.
>
> There are many reasons for the 64 bit boundary.
>   - Allowing identifier locator split: 8+8 / GSE that led to ILNP and NPT66
>   - Simplicity in addressing (no more subnet masks)
>   - A fair balance between the users and the providers of networks.
>     Ensure that users get a fair share of addresses and try to avoid
>     operators charging per address.
>
> The 64 bit boundary is so embedded in the set of IPv6 specifications that
> it would be very hard to unravel at this point. It certainly cannot be a
> single paragraph put in during the advancement of 4291.


Right. If we want to change this we can, but the process for that is start
with "write a draft and get consensus in 6man". We cannot change it while
revving 4291 to full standard, because it's a substantial change.