From owner-freebsd-stable@FreeBSD.ORG Tue Mar 2 04:28:26 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5BF2D16A4CE for ; Tue, 2 Mar 2004 04:28:26 -0800 (PST) Received: from ngfl.dialnet.com (ngmail.ngfl.dialnet.com [212.44.44.76]) by mx1.FreeBSD.org (Postfix) with ESMTP id 34A0C43D2D for ; Tue, 2 Mar 2004 04:28:25 -0800 (PST) (envelope-from ict@cardinalnewman.coventry.sch.uk) Received: from ngmfilt2.ngfl.dialnet.com [212.44.44.78] by ngfl.dialnet.com with ESMTP (SMTPD32-6.06) id ACC8979B0134; Tue, 02 Mar 2004 12:23:36 +0000 Received: from relay.ngfl.dialnet.com (unverified) by ngmfilt2.ngfl.dialnet.com for ; Tue, 2 Mar 2004 12:28:33 +0000 Received: from firewall.cardinalnewman.lan ( [172.30.0.70]) by ngrelay.dialnet.com with SMTP (MailShield v2.04 - WIN32 Jul 17 2001 17:12:42); Tue, 02 Mar 2004 12:26:35 -0000 Received: from mail.cardinalnewman.lan (mail.cardinalnewman.lan [192.168.0.3]) i22CSIQV030583 for ; Tue, 2 Mar 2004 12:28:18 GMT (envelope-from ict@cardinalnewman.coventry.sch.uk) Received: from dumpster.cardinalnewman.lan (dumpster.cardinalnewman.lan [192.168.0.9])i22CSHio092978 for ; Tue, 2 Mar 2004 12:28:17 GMT (envelope-from ict@cardinalnewman.coventry.sch.uk) From: ict technician Organization: Cardinal Newman School To: freebsd-stable@freebsd.org Date: Tue, 2 Mar 2004 12:28:17 +0000 User-Agent: KMail/1.5.4 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200403021228.17716.ict@cardinalnewman.coventry.sch.uk> X-Virus-Scanned: by amavisd-milter (http://amavis.org/) X-Spam-Status: No, hits=-5.8 required=5.0 tests=USER_AGENT_KMAIL version=2.50 X-Spam-Checker-Version: SpamAssassin 2.50 (1.173-2003-02-20-exp) X-Filter-Version: 1.11a (mail.cardinalnewman.lan) X-SMTP-HELO: firewall.cardinalnewman.lan X-SMTP-MAIL-FROM: ict@cardinalnewman.coventry.sch.uk X-SMTP-RCPT-TO: freebsd-stable@freebsd.org X-SMTP-PEER-INFO: [172.30.0.70] Subject: em0 checksum errors X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Mar 2004 12:28:26 -0000 I've been testing an application which uses UDP. I was having difficulties so I started taking packet dumps. I noticed that many packets have bad checksums. The errors are mostly on UDP packets but I do see some TCP packets with errors also. This occurs on system applications without the new app. running, e.g. dns/ssh This is reproducable on more than one system, although the NICs are probably from the same batch, as I bought a box of 5 out of 7 in use. Systems are 4.9-RELEASEp1/p2. The cards are Intel PRO/1000 MT Server. I'll get the numbers off the card shortly. One box on stable (18th Feb) seems okay so I'm going to try stable on my test box and see if that cures it. I won't spam the list with the dump. -- i j hart ICT Technician Cardinal Newman Catholic School & Community College