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Re: Mysterious Connectivity Problem



Hello all,

I'm having a very mysterious connectivity issue with one of my new debian boxes, and was wondering if anyone has see this sort of problem before...

The long and the short of the problem is that this machine goes 'dead to the world' randomly... Can't SSH to it, can't POP, can't SMTP, cant do anything. The only thing that revives is it is I ping it once. If I ping it, everything starts working perfectly again. At least until the next time it croaks...

I've checked the arp caches on all the machines that access this box, and also on our gateway router. The caches all show the right ip-to-mac association.

It's just very weird... I havent been able to correllate this behavior to any particular stimuli -- it seems to die randomly. But in every case, I have been able to revive it by pinging it (the pings never fail)...

I guess a more direct way to put it would be: TCP and UDP cease functioning randomly, and the only way to revive TCP/UDP connectivity is to ping it with an ICMP packet...

   Can anyone think of a reason this could be happening?

Thanks,
Brad


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