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Re: Should a nameserver know about itself?

"D. J. Bernstein" <djb@cr.yp.to> Fri, 01 June 2001 07:07 UTC

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From: "D. J. Bernstein" <djb@cr.yp.to>
To: dnsop@cafax.se
Subject: Re: Should a nameserver know about itself?
References: <1585.991293234@brandenburg.cs.mu.OZ.AU> <Pine.BSI.4.05L.10105311148580.26280-100000@x17.ripe.net>
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Shane Kerr writes:
> one of nominum.com's name servers is ns-ext.vix.com

.com doesn't allow two server names to point to the same IP address.
Section 3.4.2 of draft-ietf-provreg-grrp-reqs-02.txt corrects this flaw.

> every time they buy a smaller ISP they're going to have to worry
> about not only integrating the different infrastructure into their
> own, but also now changing a set of records in one or more RIR
> databases to use their preferred name servers.

Why do you think this is a disadvantage for in-zone server names? Here's
the situation:

                   Current system            In-zone server names
                   ------------------------  -----------------------------
   Old delegation  1.i-a.arpa NS a.ns.x.net  1.i-a.arpa NS a.ns.1.i-a.arpa
                                             a.ns.1.i-a.arpa A 4.3.2.1

   New delegation  1.i-a.arpa NS a.ns.y.net  1.i-a.arpa NS a.ns.1.i-a.arpa
                                             a.ns.1.i-a.arpa A 9.8.7.6

In both systems, the delegation has to be changed.

---Dan

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