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Re: Should a nameserver know about itself?

James Raftery <james@now.ie> Wed, 09 May 2001 20:02 UTC

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Date: Wed, 09 May 2001 15:00:54 +0100
From: James Raftery <james@now.ie>
To: dnsop@cafax.se
Subject: Re: Should a nameserver know about itself?
Message-ID: <20010509150054.C84103@domainregistry.ie>
References: <Pine.BSF.4.21.0105091625580.43413-100000@julubu.staff.apnic.net> <2588.989409075@brandenburg.cs.mu.OZ.AU> <20010509144335.G42800@sunet.se>
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In-Reply-To: <20010509144335.G42800@sunet.se>; from mansaxel@sunet.se on Wed, May 09, 2001 at 02:43:35PM +0200
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On Wed, May 09, 2001 at 02:43:35PM +0200, Mans Nilsson wrote:
> Well written. They lose. SE does this, same method. After initial
> confusion, most people running DNS agree that it is a Good Thing to
> do. Some people don't. Running the risk of being whacked (as usually)

And for IE too. An authoritative nameserver is authoritative for a
finite set of zones. There is no reason to presume the auth. server's
own A RR is in one of the zones it's serving.

e.g.
ns1.isp.net and ns2.isp.net host isp.net
ns3.isp.net and ns4.isp.net host ISPs customers' zones, which would
naturally not include the isp.net zone.

If you're testing the quality of a delegation, you can only query about
the zone you're delegating. I could map out the algorithm the IE
delegation checker follows if you're interested.


Regards,
james
-- 
James Raftery (JBR54)
  "It's somewhere in the Red Hat district"  --  A network engineer's
   freudian slip when talking about Amsterdam's nightlife at RIPE 38.

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