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Re: [BEHAVE] I-D Action:draft-ietf-behave-dns64-01.txt

Andrew Sullivan <ajs@shinkuro.com> Wed, 21 October 2009 17:05 UTC

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Date: Wed, 21 Oct 2009 13:05:35 -0400
From: Andrew Sullivan <ajs@shinkuro.com>
To: behave@ietf.org
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Subject: Re: [BEHAVE] I-D Action:draft-ietf-behave-dns64-01.txt
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On Wed, Oct 21, 2009 at 04:39:31PM +0000, Christian Huitema wrote:
> > The draft contains question about multihoming:"In particular, how is the
> > multi-homed host supposed to know that a given AAAA is synthetic?".
> 
> Wonder about that too. Isn't the best solution to create a new
> record type, say A4A6, that would contain the mapped addresses of
> IPv4 only hosts?

As I've been saying to someone else off-list about proposals like
that, the point of this whole DNS64 exercise is that we don't want to
have to rely on everyone in the world being upgraded in order to
provide a semblance of service continuity.  Anything that begins with
"let's add a DNS RRTYPE" isn't going to fly not because it's hard to
add DNSRRs (it'd be very easy for this case), but because getting all
the systems upgraded in order to achieve the goal is not possible.  If
we could do that, we could just get everyone onto IPv6, I think.  No?

A

-- 
Andrew Sullivan
ajs@shinkuro.com
Shinkuro, Inc.

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