[LARTC] Problem With NFS and iptables

[Unger, John W]

I have a setup where I am running on a machine with Red Hat Enterprise Linux Release 3. I have a userland program that is attempting to attach to libipq. When I issue the 'iptables -A OUTPUT -t mangle -j QUEUE' command to attach, the machine hangs. The only way to unhang the machine is to do a hard restart.

All the machine's filesystems are connected to an NFS server, including the /usr filesystem. So the OS is also running from the NFS server.

The userland program works correctly on the NFS server and on other machines that are not NFS clients. Is there some way that I can configure iptables to allow the NFS commands to be performed while the '-j QUEUE' command is executing? I believe that is where the problem is occurring because the hang occurs when that command is executing.

Does anyone else have a setup similar to this one? If so, could you share your configuration information?

Any help would be greatly appreciated.

John Unger
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