Huw
You need to recompile & install iptables after that your kernel has been patched.
Since you run RH, make sure also that iptables RPM package is not installed.
# rpm -q iptables
package iptables is not installed
If it is, just remove it, and re-compile & reinstall iptables.
Have a nice day,
Fabrice.
--
Fabrice MARIE
"Silly hacker, root is for administrators"
-Unknown
_________________________________________________________________
Help STOP SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail