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Re: weirdness with TCP timeouts?

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On 08/09/14 11:25, The Natural Philosopher wrote:

> The second issue was that ssh sessions to my remote server were timing
> out. They never used to, but I pulled the ssh keepalive down to a couple
> of minutes and now the session stays up.

As that is possibly a reproducible and simple problem, could you put the 
timeout up and run a tcpdump against it until it dies and see if 
anything happens at the end?

> That is in some way sockets are being closed inside the kernel in ways
> they shouldn't be. And applications are not being notified that they
> have closed.
>
> IN short my fevered imagination is considering the possibility that TCP
> timeouts in the kernel have changed in  unexpected ways, so that
> connections that used to exist, have been silently dropped.

Not aware of anyhing which means bugger all here -

Just one observation - have you changed the device that provides your 
NAT (if any) to the internet recently? NAT clearing sessions could cause 
these symptoms

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Thread

weirdness with TCP timeouts? The Natural Philosopher <tnp@invalid.invalid> - 2014-09-08 11:25 +0100
  Re: weirdness with TCP timeouts? Tim Watts <tw_usenet@dionic.net> - 2014-09-08 17:35 +0100
    Re: weirdness with TCP timeouts? The Natural Philosopher <tnp@invalid.invalid> - 2014-09-08 17:54 +0100
      Re: weirdness with TCP timeouts? The Natural Philosopher <tnp@invalid.invalid> - 2014-09-08 18:06 +0100
  Re: weirdness with TCP timeouts? Johnny <johnny@invalid.net> - 2014-09-08 13:25 -0500
    Re: weirdness with TCP timeouts? The Natural Philosopher <tnp@invalid.invalid> - 2014-09-08 19:27 +0100
  Re: weirdness with TCP timeouts? Chick Tower <c.tower@deadspam.com> - 2014-09-19 02:33 +0000
    Re: weirdness with TCP timeouts? The Natural Philosopher <tnp@invalid.invalid> - 2014-09-19 06:30 +0100

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