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Re: Should a nameserver know about itself?

"D. J. Bernstein" <djb@cr.yp.to> Wed, 30 May 2001 06:06 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: <200105091818.f49II1Z05093@zed.isi.edu> <5696.989435370@brandenburg.cs.mu.OZ.AU>
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Robert Elz writes:
> Whether that happens for in-addr.arpa domains or not I am not sure, but
> if you believe the reasoning for doing this (which is largely to force
> glue to be provided) then it probably should.

Right. If you create a reverse zone in the simplest possible way with
tinydns, namely ./add-ns 3.2.1.in-addr.arpa 1.2.3.144, you get

   3.2.1.in-addr.arpa. NS a.ns.3.2.1.in-addr.arpa.
   a.ns.3.2.1.in-addr.arpa. A 1.2.3.144

so that glue is always provided.

Unfortunately, neither ARIN nor RIPE supports glue, despite the last
paragraph of RFC 1034 section 4.2.2, so reverse lookups on the Internet
are unnecessarily rickety.

---Dan

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