Re: hang ftp connections...

From: Ben Ford (ben@kalifornia.com)
Date: Wed Nov 01 2000 - 10:41:47 EST


I have a very similar problem. I am running test10-pre5 (x86). I can accept
uploaded FTP all day long, but when downloading from me, my network dies in
very short order. This was a windows box that was killing me (both ME and
2000). These are about 100 2-4 meg files that I'm talking about. I didn't
see any significant log entries, but there was one oddity. There were 4
incorrect FTP login attempts recorded when I actually logged in successfully
the first time.

I bring the network down (ifconfig eth0 down), kill dhclient then bring it
back up and restart dhclient. That seems to work, but it's a pain in the
butt.

-b

Tigran Aivazian wrote:

> Hi guys,
>
> I noticed this since I installed test10-pre5 (maybe 6) on my
> desktop. FTP connections to Solaris became very strange, i.e. after the
> transfer is finished it would never actually close the control socket and
> hang it there. So, I assumed that most likely Solaris kernel is full of
> bugs (as a commercial OS ought to be) and they don't even implement FTP
> protocol correctly, so that the exceeding correctness of ours at
> test10-preX shows their bugs. However, now the same thing happened when
> talking to ftp.kernel.org and that surely runs Linux. So there must be a
> bug somewhere. I will now upgrade all my systems to final proper test10
> and see if the problem is still there...
>
> I only noticed this with ftp; other critical services (irc, telnet etc.)
> work fine.
>
> Regards,
> Tigran
>
> -
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Oct 28 16:55:36 Deacon -- MARK --
Oct 28 17:15:36 Deacon -- MARK --
Oct 28 17:23:30 Deacon proftpd[10662]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password.
Oct 28 17:23:30 Deacon proftpd[10662]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed.
Oct 28 17:23:32 Deacon proftpd[10663]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password.
Oct 28 17:23:32 Deacon proftpd[10663]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed.
Oct 28 17:23:33 Deacon proftpd[10665]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password.
Oct 28 17:23:33 Deacon proftpd[10665]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed.
Oct 28 17:23:36 Deacon proftpd[10664]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password.
Oct 28 17:23:36 Deacon proftpd[10664]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed.
Oct 28 17:23:44 Deacon proftpd[10668]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori: Login successful.
Oct 28 17:23:44 Deacon proftpd[10669]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori: Login successful.
Oct 28 17:27:56 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:28:28 Deacon last message repeated 4 times
Oct 28 17:28:44 Deacon last message repeated 2 times
Oct 28 17:28:44 Deacon proftpd[10668]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP no transfer timeout, disconnected.
Oct 28 17:28:52 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:29:24 Deacon last message repeated 4 times
Oct 28 17:30:28 Deacon last message repeated 8 times
Oct 28 17:31:32 Deacon last message repeated 8 times
Oct 28 17:32:36 Deacon last message repeated 8 times
Oct 28 17:32:44 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:32:48 Deacon proftpd[10669]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP no transfer timeout, disconnected.
Oct 28 17:32:52 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:33:16 Deacon last message repeated 3 times
Oct 28 17:33:17 Deacon su[10695]: - pts/0 ben-root
Oct 28 17:33:22 Deacon su[10696]: + pts/0 ben-root
Oct 28 17:33:24 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:33:56 Deacon last message repeated 4 times
Oct 28 17:35:00 Deacon last message repeated 8 times

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