The networks are physically separated from each other with the
exception of a small overlap area. The MN moves past this overlap
into the foreign network and loses contact with the HA and its home
(current) AP. Within the mip6d session, the router will expire and
the MN will begin sending out router solicitations even though the
foreign router is transmitting router advertisements at the time. It
is only after I force the move into the foreign network that the MN
then receives a router advertisement and then successfully binds a CoA
for the foreign network.
This is why I am thoroughly confused by the situation, because it will
not do it automatically.