Well, ifupdown should now be able to do network autodetection, at least as soon as I write some scripts that can autodetect stuff. Neato.

As it stands, it's probably also enough to do PCMCIA-esque schemes, but it turns out fitting PPP stuff into the metaphor well is non-trivial. Oh well, phase one is mostly done (tidying up code, changing command line syntax, and fixing the manpages is about all that's left), phase two should be easy, and phase three at least seems doable now.