And please, if you want this network setup supported, help make changes to the system so that it IS a supported configuration (keeping in mind, that other people need to be able to understand it, and we need to be able to present such an option in a way that makes sense and does not confuse people... something tells me that this isn't possible with your configuration.)
(honestly, I think you're being silly not letting LinuxMCE do what it's designed to do, and actually deal with all network functions, but hey, if you wanna be a control freak sysadmin geek, be my guest.)
and please, yes, before you reply at my last little quip, keep in mind, that this system is intended to be an all in one appliance, intended to take over all functions, because MOST people DO NOT HAVE a huge local area network in their house...
and before you reply about that...... PLEASE take a moment to try to realise, that you probably DID all of this, to duct tape together a setup, to get what you thought you needed, and that you've done things that much of our existing system does simpler out of the box.