I dimly recall mention of some site that can issue you a “permanent IP address” and somehow, in some unremembered fashion, it manages to know what your DHCP address du jour happens to be and it forwards the traffic accordingly.
I have a temporary-only need for my auxiliary computer to have an IP address that will stay freaking PUT for a few days. I know of some moderately complicated workarounds, but if there’s an easier trick, I should use it.
Both boxen are MacOS X computers. The one I need port-forwarded will actually be getting its true IP from a DSL connection, which comes in courtesy of Verizon, and which does not reliably stay the same address for any duration you could specify (I’ve often noted down the IP at the uptown office, commuted home, and remoted in, but perhaps one time in every 6 the IP has already been changed to who-knows-what and I can’t access it until next time I’m uptown).
I’m not sure how this “register your non-permanent computer on our website and we give you a phony-permanent IP” could work unless there’s some kind of “push” application on my machine that calls home periodically to say “yo, I’m over here now”, but I could actually live with that, I think.
