From owner-freebsd-questions@FreeBSD.ORG Thu Jul 14 17:56:33 2005 Return-Path: X-Original-To: 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 DCC3316A41C for ; Thu, 14 Jul 2005 17:56:33 +0000 (GMT) (envelope-from rjhjr@cox.net) Received: from lakermmtao05.cox.net (lakermmtao05.cox.net [68.230.240.34]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2327643D49 for ; Thu, 14 Jul 2005 17:56:33 +0000 (GMT) (envelope-from rjhjr@cox.net) Received: from localhost ([68.230.186.138]) by lakermmtao05.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050714175632.IXPP19733.lakermmtao05.cox.net@localhost> for ; Thu, 14 Jul 2005 13:56:32 -0400 Date: Thu, 14 Jul 2005 13:56:31 -0400 From: Bob Hall To: freebsd-questions@freebsd.org Message-ID: <20050714175631.GA4985@kongemord.krig.net> Mail-Followup-To: Bob Hall , freebsd-questions@freebsd.org References: <20050714044924.GA2716@kongemord.krig.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050714044924.GA2716@kongemord.krig.net> User-Agent: Mutt/1.4.2.1i Subject: Re: DHCP assigned unregistered IP address X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jul 2005 17:56:34 -0000 Thanks for all the replies. Responses to everyone's comments and suggestions: 1) It is a Motorola cable modem. (SB5100) 2) I can access 192.168.100.1 after modifying the firewall rules that stop RFC1918 nets on the outside interface. (IPFW) There's no checkbox to disable DHCP. I downloaded the modem user manual from the URL Glenn Dawson posted, but I didn't find anything on this problem. 3) I did the (shutdown, disconnect modem 30 seconds, reboot) cycle about three times, but it didn't do anything. The solution was # dhclient -r # dhclient rl0 Repeat until oip != 192.168.100.11. (I think it took four iterations, but I wasn't counting.) This cleared the IP address on both the inner and outer NICs. Maybe I should have specified the interface with the -r flag, but it was easy to fix. 4) The problem was solved by the time I saw the dig suggestion, so I didn't have a chance to try it. 5) Bill was paid on time. :) The modem web page contained this: The SURFboard cable modem can be used as a gateway to the Internet by a maximum of 32 users on a Local Area Network (LAN). When the Cable Modem is disconnected from the Internet, users on the LAN can be dynamically assigned IP Addresses by the Cable Modem DHCP Server. I take this to mean that the modem can't do NAT. It can only act as a gateway for registered IP addresses, which it can't assign. The config web page has two buttons: Reset All Defaults Restart Cable Modem I can't find any documentation on the second. Would "Restart Cable Modem" be equivalent to disconnecting the modem power for 30 seconds? And "Reset All Defaults" would have released the unregistered IP address? (Along with any other settings) How do I find the outward facing IP address for the cable modem? Is that the "option routers" line in dhclient.leases?