Re: 6MAN Adoption call on draft-gont-6man-deprecate-eui64-based-addresses-00

On 21 Nov 2013, at 15:03, Alissa Cooper <acooper@cdt.org> wrote:

> On Nov 21, 2013, at 2:01 AM, Fernando Gont <fgont@si6networks.com> wrote:
> 
>> On 11/20/2013 12:54 PM, Scott Brim wrote:
>>> I thought we got informal consensus on SHOULD NOT a while ago.
>> 
>> FWIW, this is one of the topics we brought up at the 6man meeting, and
>> there was some interesting discussion on the topic (e.g., noting that
>> smilar debate had arised when site-local addresses were deprecated, but
>> they were nevertheless deprecated).
> 
> Just to reinforce this point: there are more than the two options that have been debated in this thread ("Node MUST NOT employ …" and "Nodes SHOULD NOT employ …"). For example, it would be possible to make a different recommendation for new implementations than for existing implementations: "New implementations MUST NOT employ …" and "Existing implementations SHOULD NOT employ …." It seems like this kind of formulation could assuage some (but not all) of the concerns expressed in this thread. Thus to me this consensus call would make sense with the caveat that if the document gets adopted as a WG item, the normative recommendation(s) will be different/weaker than the current "Nodes MUST NOT employ," without pre-judging exactly what the recommendation(s) will be (subject to further WG discussion).

The SHOULD vs MUST isn't about existing and new implementations.

Tim

> 
> Alissa
> 
>> 
>> As noted by Brian, the current contents of the I-Ds are not casted into
>> stone. And one of the first things the wg should decide after adoption
>> is this specific topic -- I could write an email summarizing the
>> arguments in favor of the current text, and the arguments in favor of
>> s/SHOULD NOT/MUST NOT/ such that the wg can make a decision.
>> 
>> Thanks,
>> -- 
>> Fernando Gont
>> SI6 Networks
>> e-mail: fgont@si6networks.com
>> PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492
>> 
>> 
>> 
>> 
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