Patent ID: 7623497

Claim:
A home mobility agent node in a communication network comprising: an input/output interface for receiving a registration request message to cancel a binding between a home address and a dynamic care-of-address (dynamic CoA) of a mobile terminal; a filter; and a processor coupled with a memory, wherein the processor is configured to a) cancel the binding between the home address and the dynamic CoA; b) configure a new binding between the home address and a default care-of address (default CoA), wherein the default CoA is an address of an access node associated with a mobile node proxy server (MNPS) for serving as a proxy on behalf of the mobile terminal; c) use the filter for filtering at least one packet that arrives for the home address to determine if the at least one packet should be tunneled to the default CoA; d) tunnel the at least one packet to the default CoA; and e) relay a security association to the mobile terminal and to the mobile node proxy server (MNPS), wherein the security association allows for authentication of the at least one packet.