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Re: [DNSOP] avoiding fragmented DNS-over-UDP

Tony Finch <dot@dotat.at> Thu, 22 March 2018 12:40 UTC

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Date: Thu, 22 Mar 2018 12:39:57 +0000
From: Tony Finch <dot@dotat.at>
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Subject: Re: [DNSOP] avoiding fragmented DNS-over-UDP
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Tony Finch <dot@dotat.at> wrote:
>
> Here are some sketchy notes on what this might say...

Geoff Huston just told me I need to read Davey Song's very clever
"additional truncated response" and that he would roast my suggestions
if I didn't mention ATR :-)
https://tools.ietf.org/html/draft-song-atr-large-resp
http://iepg.org/2018-03-18-ietf101/geoff.pdf

Geoff is very keen on ATR. I think we should work on ATR, and as well as
that it would still be a good idea to work on both client-side mitigations
(for servers that don't have mitigations) and on server-side response size
reduction to avoid unnecessary ATR / TCP.

Tony.
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