Debian bug report logs - #827
who reports wrong hostname (was: resolver problems FIXED!)

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From cae.wisc.edu!streeter Sun Apr 23 12:44:08 1995
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From: Carl V Streeter <streeter@cae.wisc.edu>
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Subject: Re: Bug#827: who reports wrong hostname (was: resolver problems FIXED!)
To: chris@cosy.sbg.ac.at, debian-bugs@Pixar.com
Date: Sun, 23 Apr 1995 14:43:51 CDT
Cc: streeter@cae.wisc.edu
In-Reply-To: <m0s35Yv-0000VGC@baer.cosy.sbg.ac.at>; from "Christian Linhart" at Apr 23, 95 7:35 pm
Reply-To: streeter@cae.wisc.edu
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> 
> 
> Package: libc or shellutils
> Version: 4.6.27-carl or 1.12-3
> 
> Carl Streeter <streeter@cae.wisc.edu> wrote:
> > Well, I *think* that the resolver problems in the recent libc's
> > have been ironed out.  The fix that went into 4.7 didn't quite do all
> > of it.  I made a patched version of libc-4.6.27 that should fix everything
> > up.  I've been running it for a while now, and it seems to work.
> > I'd appreciate if others could try it as well.
> 
> who reports wrong hostnames.
> 
> Here is what I did:
> I logged in from frosch.cosy.sbg.ac.at to dackel.cosy.sbg.ac.at
> and issued "who" (I was logged in from baer.cosy.sbg.ac.at, too).
> dackel and baer are Debian 0.93 systems, frosch is a sun sparc
> running SunOS.
> 
> who displayed:
> root@dackel:/tmp> who
> chris    ttyp0    Apr 23 19:09 (baer.cosy.sbg.ac)
> chris    ttyp1    Apr 23 19:18 (dackel.cosy.sbg.)
> 				^^^^^^ should be frosch

What are you using to reolve addresses?  Named, or hosts?
does an nslookup on 141.201.2.16 give you frosch's name?

This would probably not be a bug in who, as who just reads the utmp file,
and I would suspect either a config problem, or a problem with whatever's
writing the utmp file.  in.rlogind, or in.telnetd.

If there's nothing wrong in the hosts file on dackal, and nslookup is 
right, let me know, and I'll find something else to test it with.


--
Carl Streeter             |  "Nothing is more frightening than 
streeter@cae.wisc.edu     |    ignorance in action"   --Goethe 
Just another Perl hacker  |  ...Have you seen my saltshaker?
Puck 'em Bucky!           |  http://www.engr.wisc.edu/~streeter/

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From cosy.sbg.ac.at!chris Sun Apr 23 10:37:00 1995
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From: chris@cosy.sbg.ac.at (Christian Linhart)
Subject: who reports wrong hostname (was: resolver problems FIXED!)
To: streeter@cae.wisc.edu
Date: Sun, 23 Apr 1995 19:35:12 +0200 (MET DST)
Cc: debian-bugs@pixar.com
In-Reply-To: <199504220420.XAA29148@milk.engr.wisc.edu> from "Carl V Streeter" at Apr 21, 95 11:20:38 pm
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Package: libc or shellutils
Version: 4.6.27-carl or 1.12-3

Carl Streeter <streeter@cae.wisc.edu> wrote:
> Well, I *think* that the resolver problems in the recent libc's
> have been ironed out.  The fix that went into 4.7 didn't quite do all 
> of it.  I made a patched version of libc-4.6.27 that should fix everything
> up.  I've been running it for a while now, and it seems to work.
> I'd appreciate if others could try it as well.

I upgraded to libc-4.6.27-carl but a probably resolver-related problem
didn't go away:

who reports wrong hostnames.

Here is what I did:
I logged in from frosch.cosy.sbg.ac.at to dackel.cosy.sbg.ac.at
and issued "who" (I was logged in from baer.cosy.sbg.ac.at, too).
dackel and baer are Debian 0.93 systems, frosch is a sun sparc
running SunOS.

who displayed:
root@dackel:/tmp> who
chris    ttyp0    Apr 23 19:09 (baer.cosy.sbg.ac)
chris    ttyp1    Apr 23 19:18 (dackel.cosy.sbg.)
				^^^^^^ should be frosch

Here are the IP-Adresses of these hosts:
141.201.2.16    frosch
141.201.2.58    dackel
141.201.2.205   baer   (temporarily connected via SLIP)

-Chris