Patent ID: 7356009
Filing Date: 2008-04-08
Classification: H04L,H04W

Abstract:
1. A method for binding a mobile node to a subnet comprising the steps of: intercepting a Dynamic Host Configuration Protocol (DHCP) request message sent by a mobile node on a first subnet; inserting data representative of a second subnet into the intercepted DHCP request message to request an Internet Protocol (IP) address associated with the second subnet; forwarding the intercepted DHCP request message with the data representative of the second subnet to at least one DHCP server; intercepting a DHCP reply message sent by at least one DHCP server to the mobile node; selecting a DHCP reply message with a subnet identifier matching the second subnet; forwarding the selected DHCP reply message to the mobile node; discarding a DHCP reply message that that has a subnet identifier that does not match the second subnet.