Date: Mon, 24 Jun 2002 21:46:18 -0700 (PDT) From: Lamont Granquist <lamont@scriptkiddie.org> To: "Morse, Richard E." <REMORSE@PARTNERS.ORG> Cc: freebsd-stable@freebsd.org Subject: RE: Did someone break TCP? Message-ID: <20020624214242.G20202-100000@coredump.scriptkiddie.org> In-Reply-To: <375F68784081D511908A00508BE3BB1701EF1BEF@phsexch22.mgh.harvard.edu>
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On Mon, 24 Jun 2002, Morse, Richard E. wrote: > Lamont Granquist [mailto:lamont@scriptkiddie.org] wrote: > > I've got an IRC server with a few days of uptime now after > > upgrading to > > both FBSD 4.6 and ircd-hybrid 6.3 out of the ports tree. > > Tonight I found > > that I couldn't login, TCP wasn't completing the 3-way > > handshake (no RST, > > no SYN|ACK). Stopping the service and restarting it fixed > > the problem. > > At this point it looks like TCP freaked out. > > > > I tried multiple different ways to login to the ircd, both > > remotely, from > > the local box and from behind the machine that it acts as a > > firewall for. > > All the users reported a 3+ hour outage prior to me finding > > the problem. > > There was nothing that I was doing to the box at the time. > > This has been > > previously stable hardware. > > Hi! This sounds like a problem I'm having on a FreeBSD 4.5-p6 (actually, > any of the patch levels) box. After a few days, it just drops off the > network. If I try to ping anything, I get an error "no buffer space > available" (I think -- I'm remembering this off the top of my head). I've > written about this a number of times, and no one has been able to suggest a > solution. I've discovered that running tcpdump will force the computer to > reconnect to the network, so the best that I've been able to do (which cures > the symptoms, but not the problem) is to run 'tcpdump -c 10' via cron every > two hours or so... > > If you do figure out what causes this, _please_ let me know. I would > _really_ like to see this fixed... No, that isn't the same issue. I could still ssh into the box, and therefore don't believe it was a driver issue. It seemed to be that something in the data structures associated with that one socket got corrupted? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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