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Re: DNSSEC - Signature Only vs the MX/A issue.
- To: Stephane Bortzmeyer <bortzmeyer@nic.fr>
- Subject: Re: DNSSEC - Signature Only vs the MX/A issue.
- From: Josh Littlefield <joshl@cisco.com>
- Date: Tue, 28 Nov 2006 16:42:49 -0500
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- Cc: namedroppers@ops.ietf.org
- Delivery-date: Wed, 29 Nov 2006 00:13:24 +0000
- Dkim-signature: v=0.5; a=rsa-sha256; q=dns/txt; l=1064; t=1164750178; x=1165614178; c=relaxed/simple; s=rtpdkim2001; h=Content-Type:From:Subject:Content-Transfer-Encoding:MIME-Version; d=cisco.com; i=joshl@cisco.com; z=From:=20Josh=20Littlefield=20<joshl@cisco.com> |Subject:=20Re=3A=20DNSSEC=20-=20Signature=20Only=20vs=20the=20MX/A=20iss ue. |Sender:=20 |To:=20Stephane=20Bortzmeyer=20<bortzmeyer@nic.fr>; bh=vSceOUSGc8afCtWUjht0h73mrEZjWggo3IU1eJb/ARc=; b=P781eSR4PluqGOtMx5yw9lWzfC+FGQy7Qd1cMbFgJC9D6JULrSVWSK3EmlGvwV2mWgt90wSU k8OifuESMXTq4gJvaKtTYdV6zg3lJjJRckaxC5mk1UE7lpfnwVuoK4a7;
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Stephane Bortzmeyer wrote:
> 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.
Similarly, RFC 3263 defines fallback from NAPTR to SRV (at a different
but related name), followed by fallback to A and AAAA.
--
=====================================================================
Josh Littlefield Cisco Systems, Inc.
joshl@cisco.com 1414 Massachusetts Avenue
tel: 978-936-1379 fax: 978-936-2226 Boxborough, MA 01719-2205
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