Hello there, I know this problem is quite old and well-known, however, I was not able to find a fix. As soon as I use the owner module on my Linux box (iptables 1.2.7a, Debian Kernel 2.4.20), I get the error message iptables: Invalid argument I heard that this has something to do with structural changes in the kernel, but - what can I do to make it work on my 2.4.20? Compiling 1.2.8 did not seem to help me out :( Thanks! Florian