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Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt

Brian E Carpenter <brian.e.carpenter@gmail.com> Sun, 16 July 2017 22:59 UTC

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Subject: Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt
To: Morizot Timothy S <Timothy.S.Morizot@irs.gov>, Lorenzo Colitti <lorenzo@google.com>, Nick Hilliard <nick@foobar.org>
Cc: "draft-ietf-6man-rfc6434-bis@tools.ietf.org" <draft-ietf-6man-rfc6434-bis@tools.ietf.org>, IETF IPv6 Mailing List <ipv6@ietf.org>
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Mon, 17 Jul 2017 10:59:33 +1200
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On 17/07/2017 03:36, Morizot Timothy S wrote:
> I’ve commented on this topic in the past, but will simply make one more observation on this specific point. The RFC is informational

That's our choice. I think that with IPv6 being at Full Standard, 
it's time to open the debate about whether 6434bis should be a BCP.

> so isn’t a matter of huge concern as it has no impact on product selection or the procurement process.

Only for customers who treat RFC status as holy writ. Many people are
more realistic and will use an RFC called "Node Requirements" as
a requirements checklist.

...> This document says that hosts SHOULD support DHCPv6 because operators might use it. 

Operators might *require* it, so a recommended-to-implement requirement
is entirely appropriate for a document aimed at implementers.

> But our current recommendations say that:
> 
>   1.  Such hosts SHOULD prefer SLAAC over DHCPv6
>   2.  DHCPv6-only networks are NOT RECOMMENDED

As others have said, that is compatible with recommended-to-implement.

    Brian

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