Patent ID: 7512088

Claim:
A method for routing data packets to a mobile node, comprising: registering the mobile node with a home agent associated with the mobile node, the mobile node having a home address; receiving at the home agent a plurality of Layer 2 signals from the mobile node; establishing at the home agent that the mobile node has moved from a first network to a second network, the movement established from the Layer 2 signals; determining at the home agent a foreign access router of the second network, the determining independent of the foreign access router being registered with the home agent, the mobile node communicating through the foreign access router; updating a mobility binding table with a binding entry associating the home address with the foreign access router; sending a gratuitous address resolution protocol from the home agent to allow a plurality of devices to communicate with the mobile node through the home agent; and proxying, by the home agent, for the home address to forward a plurality of data packets from the devices to the mobile node in accordance with the updated mobility binding table.