Re: problem statement [was Re: New Version Notification for draft-hinden-ipv4flag-00.txt]

Nick Hilliard <nick@foobar.org> Tue, 21 November 2017 22:33 UTC

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Date: Tue, 21 Nov 2017 22:33:05 +0000
From: Nick Hilliard <nick@foobar.org>
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To: Lorenzo Colitti <lorenzo@google.com>
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Subject: Re: problem statement [was Re: New Version Notification for draft-hinden-ipv4flag-00.txt]
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Lorenzo Colitti wrote:
> On Wed, Nov 22, 2017 at 12:47 AM, Nick Hilliard <nick@foobar.org>; wrote:
> > There would also be a requirement
> > for the network edge to be able to filter out RAs with this option,
> 
> Why is it not sufficient to configure the routers that emit the RAs?

because you're assuming congruity between ipv4 and ipv6 connectivity on
a network, which is not codified in any ietf document that I'm aware of.
 If there is a incongruity between management of the two protocols, then
the l2 network must have a mechanism to stop an ipv6 gateway from
attempting shutting down ipv4 services.

Nick