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Re: [v6ops] draft-ietf-6man-rfc4291bis prohibiting non-/64 subnets

2017-02-23 21:39:02

On Feb 23, 2017, at 10:34 PM, Lorenzo Colitti <lorenzo(_at_)google(_dot_)com> 
wrote:

On Fri, Feb 24, 2017 at 12:23 PM, Christopher Morrow 
<morrowc(_dot_)lists(_at_)gmail(_dot_)com> wrote:
The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf(_at_)ietf(_dot_)org mailing lists by 2017-03-01. Exceptionally, 
comments may be
sent to iesg(_at_)ietf(_dot_)org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting."

Nothing in the past really matters here, what matters is: "Is the bis draft 
all set, did we fix all the things which must be fixed before this draft 
becomes a real 'standard'?"

I don't think you can say nothing in the past matters here. We know that 
there have been host implementations that relied on this guarantee, and we 
have to consider that if we change the standard, those implementations will 
become non-compliant.

This has always been the case and was a big excuse given by Cisco back in the 
1990s for not fixing the directed-broadcast problem.

For progress to occur sometimes a prior behavior will become invalid, if we 
can’t handle this then there’s no hope.  I don’t live in a world without hope.

- Jared