When
a Mobile Node moves back to its home network, it determines whether
it is attached to its home network based on the network prefix information
it receives in the Router Advertisements sent by Home Agents on
the home link. The Mobile Node deregisters by sending a special
Binding Update to its Home Agent to tell the Home Agent it is now
attached to the home network. The Home Agent stops capturing and forwarding data-packets
for the Mobile Node. The Mobile Node sends a Neighbor Advertisement
to link its home address with its own link-level address.
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