hi,
   this is the error message i get when i give the command below. any idea why? i have compiled the kernel with mport patch. insmod is working. but this command give an error. well non of the patched commands are working, where as the modules can be loaded into the memory.
 
[root@sprinter root]# iptables -A FORWARD -p tcp -m mport --ports 80,21 -j ACCEPT
iptables v1.2.6a: Couldn't load match `mport':/lib/iptables/libipt_mport.so: cannot open shared object file: No such file or directory
 
Try `iptables -h' or 'iptables --help' for more information.

 
thanx
regards