[ubuntu] Installing custom iptables from source, multiple versions?

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http://ubuntuforums.org – I've been attempting to use a server with 10.04 desktop installed as a packet classifier using l7 filter: http://l7-filter.sourceforge.net/. I'm trying to get the kernel version to work. I had other issues with the userspace version, which the site suggests is unreliable anyway. Been using the official kernel howto here: http://l7-filter.sourceforge.net/HOWTO-kernel. I seem to have successfully patched, built, and installed my ke (HowTos)