Re: [DNSOP] abandoning ANAME and standardizing CNAME at apex

Paul Vixie <paul@redbarn.org> Tue, 19 June 2018 22:57 UTC

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Date: Tue, 19 Jun 2018 18:56:57 -0400 (EDT)
From: Paul Vixie <paul@redbarn.org>
To: David Conrad <drc@virtualized.org>, Ray Bellis <ray@bellis.me.uk>
Cc: dnsop@ietf.org
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References: <b73f3dc7-b378-d5d8-c7a2-42bc4326fbae@nic.cz> <alpine.DEB.2.11.1806191428250.916@grey.csi.cam.ac.uk> <691FC45D-E5B6-4131-95BF-878520351F3A@gmail.com> <bf0ba568-1a18-f8cf-c1a0-3f547d642a78@bellis.me.uk> <0438207E-A4C2-434D-9507-9D9F54765CFB@puck.nether.net> <alpine.DEB.2.11.1806191649350.916@grey.csi.cam.ac.uk> <9a0d1bae-dc58-99b5-40d1-caa7737dbfb1@bellis.me.uk> <6213286F-10EB-400F-8333-3591C7A7B78B@virtualized.org>
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Subject: Re: [DNSOP] abandoning ANAME and standardizing CNAME at apex
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Neither. There were additional data rules to mostly prevent a second lookup, and even in those days, browsers cached hostname to address mappings.

Browsers didn't adopt because srv didn't solve geo or topology optimization. For a design change of this size, more payback was needed.
-- 
Paul Vixie

----- Original Message -----
From: David Conrad <drc@virtualized.org>;
Sent: 2018-06-19 - 18:44
To: Ray Bellis <ray@bellis.me.uk>;
Subject: Re: [DNSOP] abandoning ANAME and standardizing CNAME at apex

> On Jun 19, 2018, at 2:03 PM, Ray Bellis <ray@bellis.me.uk>; wrote:
>> AIUI, a large part of the supposed issue with SRV was the inertia of the
>> installed base of browsers that wouldn't know how to access them.
> 
> I thought the more fundamental problem was the additional latency caused by the second lookup since SRV specified domain names as targets.
> 
> But maybe I’m misremembering.
> 
> Regads,
> -drc
> 
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