[dns-operations] IPv6 & IPv4 addresses

George Barwood george.barwood at blueyonder.co.uk
Fri Mar 18 10:31:06 UTC 2011

----- Original Message ----- 
From: "Simon Munton" <Simon.Munton at communitydns.net>
To: "George Barwood" <george.barwood at blueyonder.co.uk>
Cc: <dns-operations at mail.dns-oarc.net>; "Edward Lewis" <Ed.Lewis at neustar.biz>
Sent: Friday, March 18, 2011 10:00 AM
Subject: Re: [dns-operations] IPv6 & IPv4 addresses

>> dig A www.emsv.co.uk. +dnssec @a.ns.emsv.co.uk
> I quite like that - putting the AAAA & NSEC/NSEC3 in the ADDITIONAL 
> SECTION makes a lot of sense and (surely) violates nothing. Although the 
> resolver wouldn't know the AA flag also applies to the ADDITIONAL data 
> and so should really treat it as GLUE and re-query for it anyway.

The AA bit ( and/or the answer section,some naughty servers don't set the AA bit)
proves the server is authoritative for QNAME.

That means there is no need to requery for RRsets in the Additional section
that have owner = QNAME, they can be taken as Authoritative.


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