From owner-freebsd-current@FreeBSD.ORG Thu Jun 28 15:14:37 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 306D416A46F for ; Thu, 28 Jun 2007 15:14:37 +0000 (UTC) (envelope-from julian@elischer.org) Received: from outQ.internet-mail-service.net (outQ.internet-mail-service.net [216.240.47.240]) by mx1.freebsd.org (Postfix) with ESMTP id 1C83213C489 for ; Thu, 28 Jun 2007 15:14:37 +0000 (UTC) (envelope-from julian@elischer.org) Received: from mx0.idiom.com (HELO idiom.com) (216.240.32.160) by out.internet-mail-service.net (qpsmtpd/0.32) with ESMTP; Thu, 28 Jun 2007 08:14:36 -0700 Received: from julian-mac.elischer.org (home.elischer.org [216.240.48.38]) by idiom.com (Postfix) with ESMTP id 60B04125B3F; Thu, 28 Jun 2007 08:14:36 -0700 (PDT) Message-ID: <4683D063.5040105@elischer.org> Date: Thu, 28 Jun 2007 08:14:43 -0700 From: Julian Elischer User-Agent: Thunderbird 2.0.0.4 (Macintosh/20070604) MIME-Version: 1.0 To: Steve Kargl References: <20070628014311.GA50012@troutmask.apl.washington.edu> <20070628105039.GE11335@void.codelabs.ru> <20070628151215.GA58165@troutmask.apl.washington.edu> In-Reply-To: <20070628151215.GA58165@troutmask.apl.washington.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org Subject: Re: SYNCOOKIE authentication problems 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, 28 Jun 2007 15:14:37 -0000 Steve Kargl wrote: > On Thu, Jun 28, 2007 at 02:50:40PM +0400, Eygene Ryabinkin wrote: >> Steve, good day. >> >> Wed, Jun 27, 2007 at 06:43:11PM -0700, Steve Kargl wrote: >>> Any advice on how to isolate or avoid? >>> >>> Jun 27 18:31:19 node11 kernel: TCP: [192.168.0.11]:59661 to >>> [192.168.0.11]:63266 tcpflags 0x10; syncache_expand: Segment failed >>> SYNCOOKIE authentication, segment rejected (probably spoofed) >> According to Andre Oppermann, these are harmless: >> http://lists.freebsd.org/pipermail/freebsd-net/2007-June/014401.html >> >> But I am expiriencing some problems related to the other messages >> like 'tcp_input: Listen socket: Spurious RST, segment rejected'. >> Though it seems not to be your case, but my problems are documented >> in the aforementioned thread. Just in case you're curious... >> -- > > Andre certainly knows more about TCP/IP than I, but no, these > are not harmless. Everytime one of these messages appears > on the console, my MPI application hangs and must be restarted. > My large numerical simulations randomly die anywhere from > 15 minutes to 25 hours after launching the job. is the app on that machine or another machine? >