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

Mukund Sivaraman <muks@mukund.org> Mon, 17 September 2018 11:55 UTC

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Date: Mon, 17 Sep 2018 17:25:50 +0530
From: Mukund Sivaraman <muks@mukund.org>
To: Petr Špaček <petr.spacek@nic.cz>
Cc: dnsop@ietf.org
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References: <b73f3dc7-b378-d5d8-c7a2-42bc4326fbae@nic.cz> <20180916095655.GA11121@jurassic> <20180917071414.7pb6elbooockzaa7@nic.fr> <20180917074327.GA13046@jurassic> <409968f7-bea2-fa14-67ba-3a6ea7feb837@bellis.me.uk> <20180917093028.GA3413@jurassic> <bec29c65-feef-0c4a-41ac-0d150f11590f@nic.cz>
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Subject: Re: [DNSOP] abandoning ANAME and standardizing CNAME at apex
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Hi Petr

On Mon, Sep 17, 2018 at 12:29:13PM +0200, Petr Špaček wrote:
> Originally I thought that current workarounds for CNAME at apex (which
> are almost everywhere) deal with it in a more deterministic way.

Do you mean the current workarounds in resolver implementations?  These
can be brought into line going forward if there's a draft of expected
behavior.

I was sold when Evan presented the (basic) ANAME idea at a team meeting
at ISC and thought it was a fine idea. Now it seems that relaxing CNAME
to be a fallback would be the most painless and simple path. I
remembered reading something on dnsop@ and got to this thread. Other
ideas would create yet another chapter in the DNS book to implement
which seems excessive for little added benefit.

		Mukund

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