From owner-freebsd-current@FreeBSD.ORG Thu Jun 16 18:50:22 2005 Return-Path: X-Original-To: current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AFEEF16A41C; Thu, 16 Jun 2005 18:50:22 +0000 (GMT) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (Odin.AC.HMC.Edu [134.173.32.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8E4AF43D1D; Thu, 16 Jun 2005 18:50:22 +0000 (GMT) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (localhost.localdomain [127.0.0.1]) by odin.ac.hmc.edu (8.13.0/8.13.0) with ESMTP id j5GIoMDq005099; Thu, 16 Jun 2005 11:50:22 -0700 Received: (from brdavis@localhost) by odin.ac.hmc.edu (8.13.0/8.13.0/Submit) id j5GIoM6k005098; Thu, 16 Jun 2005 11:50:22 -0700 Date: Thu, 16 Jun 2005 11:50:22 -0700 From: Brooks Davis To: John Baldwin Message-ID: <20050616185022.GJ21733@odin.ac.hmc.edu> References: <200506161312.51857.jhb@FreeBSD.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200506161312.51857.jhb@FreeBSD.org> User-Agent: Mutt/1.4.1i X-Virus-Scanned: by amavisd-new X-Spam-Status: No, hits=0.0 required=8.0 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on odin.ac.hmc.edu Cc: current@FreeBSD.org Subject: Re: New dhclient broke multiple domains in domain-name X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Jun 2005 18:50:22 -0000 On Thu, Jun 16, 2005 at 01:12:51PM -0400, John Baldwin wrote: > [ Apologies if this has already been brought up, I'm still 1800 messages > behind on current@. ] > > A feature of both the old and new dhclient(8) is that it would take whatever > was in the domain-name option returned by the DHCP server and stick it in the > 'search' line in /etc/resolv.conf. Thus, if you wanted to have DNS search > multiple domains, you could just pass a space separated list of domains to > search in domain-name and it would just work. I've made use of this > "feature" in several different environments in the past including my current > test lab. It's even used in the example dhclient.conf in dhclient.conf(5): > > interface "ep0" { > send host-name "andare.fugue.com"; > send dhcp-client-identifier 1:0:a0:24:ab:fb:9c; > send dhcp-lease-time 3600; > supersede domain-name "fugue.com rc.vix.com home.vix.com"; > prepend domain-name-servers 127.0.0.1; > ... > } > > The new dhclient is barfing on my domain-name setting now because it doesn't > look like a domain name: > > Setting hostname: deimos.baldwin.cx. > fxp0: link state changed to UP > DHCPDISCOVER on fxp0 to 255.255.255.255 port 67 interval 8 > DHCPOFFER from 192.168.0.1 > Bogus Host Name option 15: baldwin.cx freebsd.org atl.weather.com (baldwin.cx > freebsd.org atl.weather.com) > Invalid lease option - ignoring offer > packet_to_lease failed. > DHCPDISCOVER on fxp0 to 255.255.255.255 port 67 interval 10 > DHCPOFFER from 192.168.0.1 > Bogus Host Name option 15: baldwin.cx freebsd.org atl.weather.com (baldwin.cx > freebsd.org atl.weather.com) > Invalid lease option - ignoring offer > packet_to_lease failed. > ... > > I'd very much like the old behavior restored if possible, or an alternative > way to achieve the same result (multiple domains in the 'search' part > of /etc/resolv.conf). Note that the old domain-name trick has worked all the > way back to at least 4.1 and maybe even back in the 3.x days IIRC. I know about the issue and plan to fix it before release, but will not get to it for another week. This is a really annoying feature because it's widely supported, but clearly invalid based on reading the DHCP spec. It's a bug that isc-dhcpd sends domain-name with spaces in it since it violates the strict send, lenient accept rule. -- Brooks