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Date: Mon, 15 Sep 1997 16:53:38 +0930
From: Greg Lehey <grog@lemis.com>
To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de>
Cc: FreeBSD Hackers <hackers@freebsd.org>
Subject: Re: Resolver broken? [Was:nfs startup - perhaps it is a problem]
References: <199709142148.OAA22603@usr09.primenet.com> <199709150141.CAA26286@awfulhak.demon.co.uk> <19970915084314.IA03797@uriah.heep.sax.de>
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In-Reply-To: <19970915084314.IA03797@uriah.heep.sax.de>; from J Wunsch on Mon, Sep 15, 1997 at 08:43:14AM +0200
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On Mon, Sep 15, 1997 at 08:43:14AM +0200, J Wunsch wrote:
> As Brian Somers wrote:
>
>> Does it help if you put entries with trailing dots in /etc/hosts ?
>>
>> 10.0.0.1 my.machine my
>> 10.0.0.1 my.machine. my.
>
> I've once noticed that this did indeed help, yes.  But in my case it
> was sendmail that complained it didn't find the onw host.  I forgot
> the details, but i think the /etc/hosts part of the resolver library
> is broken with this.  Ah, yes, i remember: sendmail apparently tries
> to lookup "${hostname}.", i.e. it calls gethostname(2), and appends a
> dot to force DNS to not use the search order.  The /etc/hosts part of
> the resolver library cannot handle this unless the host is listed with
> the trailing dot in /etc/hosts.  I think this is a bug, and this part
> of the resolver library should just remove a trailing dot, to be
> (bug-)compatible to the DNS part.

Been there, done that.  I'd categorize this as a sendmail bug,
however.  There's nothing in the /etc/hosts world which suggests that
a . at the end of a name is legal.

Greg