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Re: IPv6 Routing & ND vs. Addressing, (Was: Re: <draft-ietf-6man-rfc4291bis-09.txt>)

Brian E Carpenter <brian.e.carpenter@gmail.com> Mon, 10 July 2017 23:10 UTC

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Subject: Re: IPv6 Routing & ND vs. Addressing, (Was: Re: <draft-ietf-6man-rfc4291bis-09.txt>)
To: Nick Hilliard <nick@foobar.org>, David Farmer <farmer@umn.edu>
Cc: 6man WG <ipv6@ietf.org>
References: <CAN-Dau2zgthR2w9e5ZVUdGc-vm+YvK2uTUJ8O=vrcv0jNc58RA@mail.gmail.com> <CAKD1Yr2+Si_tzNF8p6ASf4=StgFSX9Gm3TEj9iiqdE2gHQaNmQ@mail.gmail.com> <CAN-Dau03r_CKW53kegaLa=F_R_RG4cWaCT1j6idrqPm9UuN03A@mail.gmail.com> <5963BF27.1050300@foobar.org>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Tue, 11 Jul 2017 11:10:23 +1200
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On 11/07/2017 05:53, Nick Hilliard wrote:
> David Farmer wrote:
>> Or, how broad of an exception should we make?
> 
> /0 to /128 would work for me.
> 
> More seriously, the sentence "Interface IDs are required to be 64 bits
> long" is blocking consensus on this draft, and it is difficult to see
> the draft progressing with this in place.

Agreed. On the other hand, maybe rough consensus could be achieved
with s/required/recommended/, even if some objections remain.
The IETF does not require consensus, only rough consensus.

Neither of our WG Chairs is neutral on this issue; one is the
document editor, the other has a clear opinion, to which he is
completely entitled. Personally, I think the AD could step
in to judge consensus.

(Not to say that David Farmer's text is wrong, but Nick is
correct about the blocking issue.)

     Brian
 
> For static IP address configuration, there no compelling reason to
> specify any mask length restriction.  If someone wants to configure an
> arbitrary netmask on their network, then let them.  If it breaks
> something, they will learn not to do it again.  This is a completely
> self-policing issue and requires no input from the ietf.
> 
> Nick
> 
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