Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 19 Mar 2003 07:34:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 19 Mar 2003 07:34:42 -0500 Received: from outpost.ds9a.nl ([213.244.168.210]:9357 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id ; Wed, 19 Mar 2003 07:34:36 -0500 Date: Wed, 19 Mar 2003 13:45:33 +0100 From: bert hubert To: netdev@oss.sgi.com, linux-kernel@vger.kernel.org Subject: [BUG] 2.5.65 ipv6 TCP checksum errors (capture attached) Message-ID: <20030319124533.GA14363@outpost.ds9a.nl> Mail-Followup-To: bert hubert , netdev@oss.sgi.com, linux-kernel@vger.kernel.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="ew6BAiZeqk4r7MaW" Content-Disposition: inline User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3966 Lines: 71 --ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Interestingly, the initial ssh connection worked, the second one failed. Subsequent attempts fail too. This all over ipv6: hubert# tcpdump -r file -v -v 29.09 snapcount.33408 > hubert.ssh: S [tcp sum ok] 2737328594:2737328594(0) win 5760 (len 40, hlim 64) 29.09 hubert.ssh > snapcount.33408: S [tcp sum ok] 2399386333:2399386333(0) ack 2737328595 win 5712 (len 40, hlim 64) 29.09 snapcount.33408 > hubert.ssh: . [tcp sum ok] 1:1(0) ack 1 win 5760 (len 32, hlim 64) 29.10 hubert.ssh > snapcount.33408: P [bad tcp cksum 4f2!] 1:41(40) ack 1 win 5712 (len 72, hlim 64) 29.30 hubert.ssh > snapcount.33408: P [bad tcp cksum 3bf1!] 1:41(40) ack 1 win 5712 (len 72, hlim 64) 29.83 hubert.ssh > snapcount.33408: P [bad tcp cksum 23ef!] 1:41(40) ack 1 win 5712 (len 72, hlim 64) 30.86 hubert.ssh > snapcount.33408: P [bad tcp cksum 23eb!] 1:41(40) ack 1 win 5712 (len 72, hlim 64) Both hosts run 2.5.65. hubert.ipv6.ds9a.nl (publically routable, so you can try to ssh to me as long as I'm not asleep, the machine is next to my bed) is a pentium pro 200. Kernel was make mrpropered before compiling, virgin kernel. Capture attached. Regards, bert -- http://www.PowerDNS.com Open source, database driven DNS Software http://lartc.org Linux Advanced Routing & Traffic Control HOWTO http://netherlabs.nl Consulting --ew6BAiZeqk4r7MaW Content-Type: application/octet-stream Content-Disposition: attachment; filename=bad-csum Content-Transfer-Encoding: base64 1MOyoQIABAAAAAAAAAAAANwFAAABAAAAiWR4Pht3AQBeAAAAXgAAAAAIoRnw8ACgzMjyXIbd YAAAAAAoBkAgAQiIEDYAAAIIof/+GfDxIAEIiBA2AAACCKH//hnw8IKAABajKFHSAAAAAKAC FoACJAAAAgQFoAQCCAoAox+fAAAAAAEDAwCJZHg+wHcBAF4AAABeAAAAAKDMyPJcAAihGfDw ht1gAAAAACgGQCABCIgQNgAAAgih//4Z8PAgAQiIEDYAAAIIof/+GfDxABaCgI8Dut2jKFHT oBIWUOuhAAACBAWgBAIICgClzBoAox+fAQMDAIlkeD5KeAEAVgAAAFYAAAAACKEZ8PAAoMzI 8lyG3WAAAAAAIAZAIAEIiBA2AAACCKH//hnw8SABCIgQNgAAAgih//4Z8PCCgAAWoyhR048D ut6AEBaAGiIAAAEBCAoAox+gAKXMGolkeD5XigEAfgAAAH4AAAAAoMzI8lwACKEZ8PCG3WAA AAAASAZAIAEIiBA2AAACCKH//hnw8CABCIgQNgAAAgih//4Z8PEAFoKAjwO63qMoUdOAGBZQ aA0AAAEBCAoApcwfAKMfoFNTSC0xLjk5LU9wZW5TU0hfMy41cDEgRGViaWFuIDE6My41cDEt NQqJZHg+7pkEAH4AAAB+AAAAAKDMyPJcAAihGfDwht1gAAAAAEgGQCABCIgQNgAAAgih//4Z 8PAgAQiIEDYAAAIIof/+GfDxABaCgI8Dut6jKFHTgBgWUGgNAAABAQgKAKXM6ACjH6BTU0gt MS45OS1PcGVuU1NIXzMuNXAxIERlYmlhbiAxOjMuNXAxLTUKiWR4Pv/GDAB+AAAAfgAAAACg zMjyXAAIoRnw8IbdYAAAAABIBkAgAQiIEDYAAAIIof/+GfDwIAEIiBA2AAACCKH//hnw8QAW goCPA7reoyhR04AYFlBoDQAAAQEICgClzwAAox+gU1NILTEuOTktT3BlblNTSF8zLjVwMSBE ZWJpYW4gMTozLjVwMS01CopkeD4pJA0AfgAAAH4AAAAAoMzI8lwACKEZ8PCG3WAAAAAASAZA IAEIiBA2AAACCKH//hnw8CABCIgQNgAAAgih//4Z8PEAFoKAjwO63qMoUdOAGBZQaA0AAAEB CAoApdMAAKMfoFNTSC0xLjk5LU9wZW5TU0hfMy41cDEgRGViaWFuIDE6My41cDEtNQqMZHg+ 0/QJAH4AAAB+AAAAAKDMyPJcAAihGfDwht1gAAAAAEgGQCABCIgQNgAAAgih//4Z8PAgAQiI EDYAAAIIof/+GfDxABaCgI8Dut6jKFHTgBgWUGgNAAABAQgKAKXaAACjH6BTU0gtMS45OS1P cGVuU1NIXzMuNXAxIERlYmlhbiAxOjMuNXAxLTUKj2R4PkXxDgB+AAAAfgAAAACgzMjyXAAI oRnw8IbdYAAAAABIBkAgAQiIEDYAAAIIof/+GfDwIAEIiBA2AAACCKH//hnw8QAWgoCPA7re oyhR04AYFlBoDQAAAQEICgCl5wAAox+gU1NILTEuOTktT3BlblNTSF8zLjVwMSBEZWJpYW4g MTozLjVwMS01CpZkeD6mqAkAfgAAAH4AAAAAoMzI8lwACKEZ8PCG3WAAAAAASAZAIAEIiBA2 AAACCKH//hnw8CABCIgQNgAAAgih//4Z8PEAFoKAjwO63qMoUdOAGBZQaA0AAAEBCAoApgEA AKMfoFNTSC0xLjk5LU9wZW5TU0hfMy41cDEgRGViaWFuIDE6My41cDEtNQo= --ew6BAiZeqk4r7MaW-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/