from the virt_routes table for each lan). I had to add a hash to store
that for each lan, as well as another has to map a node:port back to
the lan so I could find the mask (this is needed in the code that adds
host routes for all the interfaces of a dst, which requires knowing
the mask. The mask has to carried along in the "packed" structures
that Shashi is using to save space.

Note, I have not changed the edgenode optimization code, which has a
255.255.0.0 netmask wired in. The edgenode stuff is turned off, so I
will wait until I hear from Shashi (and the new images are installed,
which is required to make that work anyway).