Is this potentially an issue with the kernel interrupts that is solved
with NAPI?  Does your firewall see a large number of packets (not bytes)?
This sounds identical to a problem I've had various times with a high
packet count firewall that was solved by using the NAPI patches.

Jason

On Tue, Oct 01, 2002 at 01:01:00AM +0200, M. P. van Galen wrote:
> Hello all,
> 
> After going from kernel 2.4.17 with the bridge-nf patch applied to it (no 
> problems at all), to kernel 2.4.19 with bridge-nf and free-swan patches 
> aplied, everything seems to work fine. But after a certain amount of 
> traffic has passed from the bridge interface to the local network (which 
> isn't firewalled) the interface seems to hang for about 5 minutes. The log 
> shows the output of an nfs-client, but the problem is not nfs specific.
> 
> /var/log/messages of the firewall shows no information at all.
> 
> 2.4.18 seemed to have the same problem.
> 
> During the blocking interface, the bridge keeps functioning, in other 
> words, there is still traffic going from our local network to the internet 
> and vv.
> 
> Maybe someone has a clue.
> 
> Cheers,
> Marijn
> Netwerknestor Bolkhuis.tudelft.nl
> 
> P.S. I'm not on the list, so please CC me
> 
> nfs-client log:
> Sep 30 23:54:40 serv kernel: nfs: server firewall.bolkhuis not responding, 
> still trying 
> Sep 30 23:54:40 serv last message repeated 2 times
> Sep 30 23:56:42 serv kernel: nfs: task 58285 can't get a request slot 
> Sep 30 23:56:42 serv kernel: nfs: task 58286 can't get a request slot 
> Sep 30 23:56:48 serv kernel: nfs: task 58287 can't get a request slot 
> Sep 30 23:58:09 serv kernel: nfs: task 58290 can't get a request slot 
> Sep 30 23:58:13 serv kernel: nfs: task 58291 can't get a request slot 
> Sep 30 23:58:16 serv kernel: nfs: task 58292 can't get a request slot 
> Oct  1 00:00:08 serv kernel: nfs: server firewall.bolkhuis OK 
> 
> 
> 
> 
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-- 
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Jason R. Martin | Network Administrator | Coordinated Science Lab
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