From owner-freebsd-questions Mon Dec 16 20: 2:18 2002 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 C008737B401 for ; Mon, 16 Dec 2002 20:02:16 -0800 (PST) Received: from rwcrmhc51.attbi.com (rwcrmhc51.attbi.com [204.127.198.38]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2F5F843EA9 for ; Mon, 16 Dec 2002 20:02:16 -0800 (PST) (envelope-from jonwolfgang@attbi.com) Received: from hades (12-227-51-133.client.attbi.com[12.227.51.133]) by rwcrmhc51.attbi.com (rwcrmhc51) with SMTP id <2002121704021505100jg623e>; Tue, 17 Dec 2002 04:02:15 +0000 From: "Jonathan Wolfgang" To: Subject: arp reports changing mac - dead network Date: Mon, 16 Dec 2002 23:02:15 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi everyone, I recently subscribed to at&t cable internet service and I am experiencing some difficulty. I'm running 4.7-Stable on a machine that is running as a firewall and performing NAT for a windows box. Throughout the day as I'm connected, the kernel reports arp: moved from ##:##:##:##:##:a8 to ##:##:##:##:##:54 on dc1 and then back from :54 to :a8. From reading through past posts, I'm assuming that this is because at&t has some funky switching router setup. The problem that is occurring is that sometimes, my outside connection completely stops. I can't ping the gateway or anything else external. The LAN connection is fine. If I reset the connection doing >ifconfig dc1 down >ifconfig dc1 up I immediately get an arp response similiar to the one listed above and the network connection is restored. This problem usually occurs overnight when the computer is idle, but sometimes it happens when I'm doing some surfing. Sometimes it happens several times per day, and other times I can go a week without seeing the symptom. I'm using a Linksys LNE100TX NIC card and a Linksys BEFCMU10 cable modem. If anyone could please give me some advice or point me in the direction of some tools that could help me find the solution, I would greatly appreciate it. If you would like anymore information, please ask. Thank you very much, Jon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message