From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <08660eafbf4cef501efcf7a33fe5d3d2@vitanuova.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] csipinfo
Date: Wed, 18 Oct 2006 20:14:32 +0100
From: rog@vitanuova.com
In-Reply-To: <0fcc387289a4a346cbd5bf450171a0d0@plan9.jp>
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> Thanks, this finally looks like what I need.

it won't work. something like the code i posted is needed.
for ptr resolution, /net/dns requires the numeric ip address, reversed,
with ".in-addr.arpa" appended. also, the address read back
from /net/dns is not the straight domain name (but you'll find
that out soon enough).

documentation on /net/dns is not great.
if one knew more about DNS, maybe the .in-addr.arpa thing
would be obvious...