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Re: [DNSOP] Introducing draft-vavrusa-dnsop-aaaa-for-free

Paul Vixie <paul@redbarn.org> Tue, 22 March 2016 01:55 UTC

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Date: Mon, 21 Mar 2016 18:55:00 -0700
From: Paul Vixie <paul@redbarn.org>
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To: Mark Andrews <marka@isc.org>
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Cc: dnsop <dnsop@ietf.org>, Marek Vavruša <mvavrusa@cloudflare.com>
Subject: Re: [DNSOP] Introducing draft-vavrusa-dnsop-aaaa-for-free
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Mark Andrews wrote:
> In message<CAC=TB12xXJNbmexMA4w5oLU+xhQbh=tKH=d7yKBLqEKLVsJikg@mail.gmail.com>, =?UTF-8?Q?Marek_Vavru=C5=A1a?= writes:
>> I see the point but I don't really want to go down the EDNS route.
>
> Why not?  It is cleaner as it deals with A-only, A and AAAA, and
> AAAA-only sites without a second lookup once support is deployed.
> It is supportable on a hop by hop basis.

i think we have to start planning for a world in which EDNS0 never 
reaches 75% penetration due to middleboxes having the high ground.

i think putting aaaa in the additional section and specifying that the 
AA bit covers all rr's matching qname or effective-qname, is likely to 
penetrate better than rrtype!=qtype in the answer section, though.

-- 
P Vixie

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