Date: Wed, 14 Nov 2001 17:36:47 -0800 From: "Crist J. Clark" <cristjc@earthlink.net> To: The Anarcat <anarcat@anarcat.dyndns.org> Cc: FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: can't do reverse dns with /etc/hosts Message-ID: <20011114173647.D66694@blossom.cjclark.org> In-Reply-To: <20011115012039.GA61093@shall.anarcat.dyndns.org>; from anarcat@anarcat.dyndns.org on Wed, Nov 14, 2001 at 08:20:39PM -0500 References: <20011115012039.GA61093@shall.anarcat.dyndns.org>
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On Wed, Nov 14, 2001 at 08:20:39PM -0500, The Anarcat wrote:
> Hi!
>
> I stumbled upon a slight problem recently. I always figured using a
> nameserver was a good idea for my local network so I had one setup for
> quite a while.. However, my router doesn't talk to the nameserver for
> security reasons. (the nameserver takes care of the *local* DNS setup.)
>
> Now, I figured that if I put a few entries in /etc/hosts on that router,
> it won't really need to consult the DNS anyways. The entries are in
> place, but it doesn't work. On a test machine, I discover that bypassing
> the nameserver to do reverse queries simply breaks them. Example, with
> the nameserver in resolv.conf:
>
> anarcat@shall[~]% host 10.0.0.1
> 1.0.0.10.IN-ADDR.ARPA domain name pointer foo.anarcat.dyndns.org
host(1) _always_ uses DNS.
> All nice and easy. Now, I enter a proper line (?) in /etc/hosts to
> replace that:
>
> 10.0.0.1 foo.anarcat.dyndns.org foo
>
> I *remove* resolv.conf (since turning "bind" off in /etc/host.conf doesn't
> seem to be enough!) and I get:
>
> anarcat@shall[~]% host 10.0.0.1
> Host not found, try again.
> anarcat@shall[~]%
>
host(1) always uses DNS.
> At first I tought /etc/hosts didn't allow reverse lookups, but after a
> bit of reading in /usr/src (lib/libc/net/gethostbyht.c is an interesting
> reading :), I realise that it *did* allow reverse lookups... I am now
> confused. Is my setup correct? What do I do wrong?
host(1) always uses DNS.
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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