Re: [DNSOP] New Version Notification for draft-jjmb-sunset4-dns-forwarding-ipv4aas-00.txt

Mark Andrews <marka@isc.org> Tue, 03 November 2015 05:28 UTC

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To: "Brzozowski, John" <John_Brzozowski@Cable.Comcast.com>
From: Mark Andrews <marka@isc.org>
References: <20151102074846.14431.30976.idtracker@ietfa.amsl.com> <D25D44C3.1913B8%john_brzozowski@cable.comcast.com> <D25E5E26.1916A1%john_brzozowski@cable.comcast.com>
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Cc: Brian Haberman <brian@innovationslab.net>, "dnsop@ietf.org" <dnsop@ietf.org>, Joel Jaeggli <joelja@bogus.com>, "Fred Baker (fred)" <fred@cisco.com>, "sunset4@ietf.org" <sunset4@ietf.org>, "Ebersman, Paul" <Paul_Ebersman@cable.comcast.com>, "terry.manderson@icann.org" <terry.manderson@icann.org>
Subject: Re: [DNSOP] New Version Notification for draft-jjmb-sunset4-dns-forwarding-ipv4aas-00.txt
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The simplest way to force this is for the ISP to only supply IPv6
recursive recursive servers to the CPE where 464XLAT / MAP* / DS-Lite
is in use.  Also if a DUID is presented over DHCPv4 (RFC 4361) don't
return nameservers.  The CPE device should be getting nameservers
via RA/DHCPv6 in this case.

The CPE at this point can only advertise it's own addresses IPv4
address or manually configured addresses.

Iterative servers should prefer IPv6.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka@isc.org