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Re: [DNSOP] draft-huston-kskroll-sentinel - naming format?

Evan Hunt <each@isc.org> Mon, 30 October 2017 17:40 UTC

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Date: Mon, 30 Oct 2017 17:40:52 +0000
From: Evan Hunt <each@isc.org>
To: Ray Bellis <ray@bellis.me.uk>
Cc: dnsop <dnsop@ietf.org>
Message-ID: <20171030174052.GB87160@isc.org>
References: <027a469c-5bb6-7940-fd89-55b91dd97275@bellis.me.uk>
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Subject: Re: [DNSOP] draft-huston-kskroll-sentinel - naming format?
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> I see that this draft uses a syntax similar to RFC 8145 Trust Anchor
> Telemetry RFC (which uses _ta-<hex_id>) albeit without the leading
> underscore, i.e. .ta-<hex_id>.
> 
> I'd like to propose instead <hex-id>._ta.<domain>
> 
> This would allow _ta to be registered as a standalone entry in the
> underscore label registry, whilst also avoid the risk of collisions with
> "plain" labels that happen to match ta-<hex>
> 
> FWIW, I think in retrospect that RFC 8145 should have taken a similar
> approach too.

IIRC we discussed it, and were concerned that _ta. could be cached as
nonexistent by servers implementing QNAME minimization.

-- 
Evan Hunt -- each@isc.org
Internet Systems Consortium, Inc.

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