Patent ID: 7020464

Claim:
At least one computer-readable medium having computer-executable instructions for performing steps for handling an address change of a mobile host communicating with a correspondent host over an existing connection, the steps comprising: deprecating, by the mobile host, an old address of the mobile host; sending, by the mobile host, an address change message to the correspondent host over a secured control channel, the secured control channel implemented with a cryptography-based security protocol, the cryptography-based security protocol comprising the address change message; returning, by the correspondent host upon receiving the address change message, an acknowledgment to the mobile host over the secured control channel; modifying, by the correspondent host, security filters and transport control parameters maintained by the correspondent host for the connection with the mobile host to use the new address of the mobile host; modifying, by the mobile host upon receiving the acknowledgment from the correspondent host, security filters and transport control parameters maintained by the mobile host for the connection to use the new address of the mobile host.