Re: [Doh] [Ext] DNS over HTTP/3?

bert hubert <bert.hubert@powerdns.com> Mon, 19 November 2018 20:14 UTC

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Date: Mon, 19 Nov 2018 21:14:07 +0100
From: bert hubert <bert.hubert@powerdns.com>
To: Ask =?iso-8859-1?Q?Bj=F8rn?= Hansen <ask@develooper.com>
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Subject: Re: [Doh] [Ext] DNS over HTTP/3?
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On Mon, Nov 19, 2018 at 11:17:45AM -0800, Ask Bjørn Hansen wrote:
> > My personal observation is that on a slightly bad network, turning off DoH
> > speeds up things massively and makes the web useable again.  This naively
> Wouldn’t comparing to DNS-over-TLS be a more relevant/fair comparison?

The reason I compare DoH to 'plain DNS' is that it was proposed as the new
default for Firefox. And if it turns out that this new default will in fact
cause a performance degradation, it may be worth pondering skipping 'DOH/2'
as default and waiting for 'DOH/3'.

(note that Mozilla has let the "we'd like to turn on DoH by default"
wording stand, but also stated there are currently no plans yet to do so).

> If you don’t need a session (or encryption) or compare with clients that don’t, that’s never going to look favorable.

DNSCrypt still offers encryption without sessions, and it works well.
Perhaps DNSCrypt/DoH is the fairest comparison.

	Bert