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Re: I-D Action: draft-carpenter-6man-lap-00.txt

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 13 June 2018 21:27 UTC

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Subject: Re: I-D Action: draft-carpenter-6man-lap-00.txt
To: David Farmer <farmer@umn.edu>, Nick Hilliard <nick@foobar.org>
Cc: IETF IPv6 Mailing List <ipv6@ietf.org>
References: <152885615366.31310.5115931223138267905@ietfa.amsl.com> <f7c1a7a2-5070-ce65-3086-f3a47a822d6a@gmail.com> <CAKD1Yr3pR4W1iUi-9+xTtfU94QAGRnTt-0y2n8_M=k42iJHyRg@mail.gmail.com> <d84f1d46-715b-32b6-7599-07e246176306@foobar.org> <CAKD1Yr3s3=0SvrDXPXMUdpU7Xs70RxgAQaWoyZHDJWceT3zhkQ@mail.gmail.com> <fda4b533-8422-ac3f-b3ad-29a82c071f21@foobar.org> <CAKD1Yr0+3du2ZON_LfQWSBzbe26XJpp4=yuF30AmyUZmA2u3wg@mail.gmail.com> <f51b6a07-cb45-9efd-9280-b0ee73faa00d@foobar.org> <CAN-Dau0oopu3GXJepKrjDAsEmFx7Wf4uhWvVZUAzrpTuFt5Nxw@mail.gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Message-ID: <b3b18096-b637-34d0-9370-aab3c5fce8c8@gmail.com>
Date: Thu, 14 Jun 2018 09:27:49 +1200
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On 14/06/2018 04:31, David Farmer wrote:
> On Wed, Jun 13, 2018 at 10:39 AM, Nick Hilliard <nick@foobar.org> wrote:
> 
>> Lorenzo Colitti wrote on 13/06/2018 16:38:
>>
>>> I doubt it. The difference between "pretty much all" and "all" is unicast
>>> addresses that start with binary 000, which aren't routable on the Internet.
>>>
>>
>> my /127 subnets disagree.
>>
>> Nick
>>
> 
> Nick, while I agree with you, you are basically making Lorenzo's point,
> this just degrades into a rehash of RFC4291-bis.
> 
> So, would someone from Lorenzo's camp please propose language that
> rationalizes RFC6164 with the 64-bit IIDs of RFC4291.
> 
> I'm tired of attempt after attemp being put forth and being told nope
> that's not it, it is time for you guys to put language on the table.

Exactly why I'm trying to put a new term on the table that allows
us to think a little bit outside the box. Longest *Acceptable* Prefix
is intended to underline that the builder or operator of a network
has a choice to make. If the choice is to allow SLAAC to work properly,
LAP==64 today. If not, some other longest prefix length might be
acceptable.

Yes, it's playing with words, but that's what we do in this RFC factory
of ours.

    Brian

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