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Re: [dnsext] errata on RFC1034 for recursive aliasing and name based diffrentiation

Mark Andrews <marka@isc.org> Fri, 04 March 2011 05:08 UTC

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To: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
From: Mark Andrews <marka@isc.org>
References: <20110227191542.6824.qmail@joyce.lan> <335963D7-3440-45E6-843C-38F419462792@cisco.com> <4D6C3FD3.7010801@ucd.ie> <302DAD77E927757D3DEA05DF@nimrod.local><alpine.LSU.2.00.1103031107460.14985@hermes-1.csi.cam.ac.uk> <20110303114148.A360FB98E2E@drugs.dv.isc.org> <alpine.LSU.2.00.1103031148130.14985@hermes-1.csi.cam.ac.uk> <4D703A35.9080207@necom830.hpcl.titech.ac.jp> <4D705952.6000409@necom830.hpcl.titech.ac.jp>
In-reply-to: Your message of "Fri, 04 Mar 2011 12:15:30 +0900." <4D705952.6000409@necom830.hpcl.titech.ac.jp>
Date: Fri, 04 Mar 2011 16:08:09 +1100
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Cc: dnsext@ietf.org
Subject: Re: [dnsext] errata on RFC1034 for recursive aliasing and name based diffrentiation
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In message <4D705952.6000409@necom830.hpcl.titech.ac.jp>, Masataka Ohta writes:
> CNAME as a target of NS should also be discouraged, because
> it may cause recursion loop to be resolved by glue, which
> requires unnecessarily complex operations.
 
CNAME as the target of a NS does not work reliably.  To make it
work reliably you would have to change the additional processing
rules in every deployed nameserver.  You would also have to change
glue to include CNAME records.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka@isc.org

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