a new hack for remote nodes! All remote node solving is done in the
new wanassign script. That script deals with both phys (ron) and
virtual (vrons), as well as fixed nodes of either type. The solution
is returned to assign_wrapper, which still does the tunnel stuff.
At some point it would be nice to get general purpose virtual nodes
(multiplex) working on either local or remote nodes, but thats a ways
off cause it means too many changes in assign_wrapper, which really
needs a total rewrite.