Re: [DNSOP] I-D Action: draft-ietf-dnsop-refuse-any-04.txt

"Wessels, Duane" <dwessels@verisign.com> Mon, 13 February 2017 18:03 UTC

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From: "Wessels, Duane" <dwessels@verisign.com>
To: Richard Gibson <rgibson@dyn.com>
Thread-Topic: [EXTERNAL] Re: [DNSOP] I-D Action: draft-ietf-dnsop-refuse-any-04.txt
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Date: Mon, 13 Feb 2017 18:02:56 +0000
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Cc: Tony Finch <dot@dotat.at>, Robert Edmonds <edmonds@mycre.ws>, dnsop <dnsop@ietf.org>, =?iso-8859-1?Q?=D3lafur_Gu=F0mundsson?= <olafur@cloudflare.com>
Subject: Re: [DNSOP] I-D Action: draft-ietf-dnsop-refuse-any-04.txt
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> On Feb 13, 2017, at 9:50 AM, Richard Gibson <rgibson@dyn.com> wrote:
> 
> On Mon, Feb 13, 2017 at 12:38 PM, Robert Edmonds <edmonds@mycre.ws> wrote:
> You think this would actually provide any sort of useful information? No
> operator would understand what "MBZ: 0xNNNN" means without re-training,
> and if you're re-training operators you may as well point them to this
> document.
> 
> I think it would be _very_ useful. People easily forget new information, but seeing unexpected data like that would provide the necessary trigger for remembering this document and e.g. retrying with +tcp.

I dislike the idea of a EDNS "partial response" flag.

Tools like dig, when asked to issue an ANY query over UDP can:

1) fail with "ANY over UDP is deprecated", or
2) warn with "ANY over UDP might give partial results", or
3) automatically use TCP

DW