[44net] minor RIP change

I've implemented a new faster gateway search algorithm for the ipip daemon (it looks up what gateway a given packet is to be sent to).

This required that the routes be stored in the global routing table in ascending order, which is opposite from before, so the order of routes in the RIP packets has also reversed. I don't think this matters to anything but I thought I'd better let you folks know just in case something started behaving oddly a few minutes ago. - Brian