From owner-freebsd-questions@FreeBSD.ORG  Sun May  8 20:13:32 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id A7C0F16A4E6
	for <freebsd-questions@freebsd.org>;
	Sun,  8 May 2005 20:13:32 +0000 (GMT)
Received: from cobalt.antimatter.net (cobalt.antimatter.net [69.55.224.239])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 7CFDE43D6B
	for <freebsd-questions@freebsd.org>;
	Sun,  8 May 2005 20:13:32 +0000 (GMT)
	(envelope-from glenn@antimatter.net)
Received: from glenn-mobile.antimatter.net (cpe-66-27-94-59.san.res.rr.com
	[66.27.94.59])	(authenticated bits=0)j48KDHAH010532
	(version=TLSv1/SSLv3 cipher=DES-CBC3-SHA bits=168 verify=NO);
	Sun, 8 May 2005 13:13:17 -0700
Message-Id: <6.1.0.6.2.20050508130759.06479e20@cobalt.antimatter.net>
X-Sender: lists@cobalt.antimatter.net
X-Mailer: QUALCOMM Windows Eudora Version 6.1.0.6
Date: Sun, 08 May 2005 13:11:56 -0700
To: Forrest Aldrich <forrie@forrie.com>,
	freebsd-questions@freebsd.org
From: Glenn Dawson <glenn@antimatter.net>
In-Reply-To: <427E6D50.2040003@forrie.com>
References: <427E6D50.2040003@forrie.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
Subject: Re: /etc/resolv.conf and your ISP
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 08 May 2005 20:13:32 -0000

At 12:49 PM 5/8/2005, Forrest Aldrich wrote:
>I can think of a few ways to resolve this, but I thought to ask here.
>
>I have Comcast for my ISP, and of course DHCP changes /etc/resolv.conf
>during each update -- lately, they've been screwing things up bigtime,
>such that I simply use my own "named" instance.
>
>My question is:  how to reliably keep your own nameserver in
>/etc/resolv.conf, and get around the frequent protocol updates that
>change/nullify your mods to /etc/resolv.conf.
>
>Perhaps just a regular script that does a diff and patch of it, or
>simply copies over the file you want regularly.  Not elegant but it
>would work.

According to dhclient.conf(5):

supersede [ option declaration ] ;

        If for some option the client should always  use  a  locally-configured
        value  or  values rather than whatever is supplied by the server, these
        values can be defined in the supersede statement.


I've never had to use this myself, but I would expect that something like:

interface "foo" {
         ...
         supersede domain-name-servers 127.0.0.1;
         ...
}

would do the trick in your case.

-Glenn


>I also wonder about creating a dhclient-exit script that would update
>certain services automatically when your IP changes.
>
>
>Thx.
>
>_______________________________________________
>freebsd-questions@freebsd.org mailing list
>http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"