Mac hangs for any ipfwd command with uid.

Hi,
I need to resolve problem with ipfw firewall. When I add any new route which filter based on uid, I lost all connectivity and my Mac hangs. It only can be restored by power cycle.
This is example of command I use:
sudo ipfw add 100 allow ip from any to any uid root
Tried to use different user ids, but it didn't help. My colleagues told me that it was a similar problem in FreeBSD, but it was fixed some time ago. This also affects version 10.5 and 10.6.
Looks like it is Mac OS problem, but may be there are any workarround.

Start with this comprehensive troubleshooting article:
https://discussions.apple.com/docs/DOC-3521
Look at this one for possible solutions:
https://discussions.apple.com/docs/DOC-3353
Ciao.

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Mac hangs for any ipfwd command with uid.

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