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Re: DNSSEC - Signature Only vs the MX/A issue.

Stephane Bortzmeyer <bortzmeyer@nic.fr> Tue, 28 November 2006 20:53 UTC

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Date: Tue, 28 Nov 2006 21:47:58 +0100
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Mike StJohns <Mike.StJohns@nominum.com>
Cc: namedroppers@ops.ietf.org
Subject: Re: DNSSEC - Signature Only vs the MX/A issue.
Message-ID: <20061128204758.GA20253@nic.fr>
References: <20061127032712.CD1FE56890@shell-ng.nominum.com> <20061128135806.GA24695@nic.fr> <20061128203532.0DC4F56890@shell-ng.nominum.com>
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On Tue, Nov 28, 2006 at 03:13:50PM -0500,
 Mike StJohns <Mike.StJohns@nominum.com> wrote 
 a message of 25 lines which said:

> Not exactly.  See my previous note to Mark.  SO still protects the
> atomicity of an RRSet - you can delete ALL of the SRV records or
> none of them.  If you delete all of them at a label, the lookup
> fails and you can't proceed.

See Peter Koch's reply :-) Many protocols define a fallback outside of
the RRset. For instance, in
http://mirrors.isc.org/pub/www.watersprings.org/pub/id/draft-andrews-http-srv-01.txt,
there is a fallback from SRV to A.


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