Patent ID: 7929556

Claim:
A method for performance by a Local Mobility Anchor (LMA) belonging to a Proxy Mobile Internet Protocol (PMIP) network, comprising: obtaining a Network Access Identifier (NAI) of a mobile node (MN) that is: (i) operating as an Internet Protocol Version 4 (IPv4) host and (ii) seeking entry to the PMIP network as its home network; sending a Dynamic Host Configuration Protocol (DHCP) request to a DHCP server that is: (i) located in the PMIP network and (ii) serving at least one Network Address Translation (NAT) device, wherein the DHCP request contains a ClientId field, and the ClientId field is set equal to the NAI; receiving a private home address (HoA) in a DHCP Ack message from the DHCP server; and sending the private HoA in a Proxy Binding Acknowledgement (PBA) message to a Mobile Access Gateway (MAG) connected to the MN.