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introduCtion
including protection against replay attacks in which a malicious node
could record valid registrations for later replay, effectively disrupting
the ability of the home agent to tunnel to the current care-of address
of the mobile node at that later time.
1.2.3 Discovering the Care-of Address
e mobile IP discovery process has been built on top of an exist-
ing standard protocol: router advertisement. Mobile IP discovery
does not modify the original fields of existing router advertise-
ments but simply extends them to associate mobility functions.
us, a router advertisement can carry information about default
routers, just as before, and in addition carry further information
about one or more care-of addresses. When the router adver ...