Patent ID: 8676999

Claim:
A client node comprising: a memory with stored instructions; and a processor coupled to the memory and configured to execute the instructions by: communicating with a server node and a plurality of mobile nodes; obtaining Prefix Authorization (PA) for one of the mobile nodes from the server node using a Remote Authentication Dial In User Service (RADIUS) protocol; and requesting that the server node release or renew a prefix for the mobile node by transmitting an Access-Request message to the server node, wherein the client node communicates with the server node using the RADIUS to authorize a prefix for a Network Access Server (NAS) interface for the mobile node, wherein the Access-Request message comprises an Auth-IPv6-Prefix-Preferred-Lifetime attribute that indicates a preferred lifetime for a requested prefix for a user of one of the mobile nodes, wherein the server node comprises an Authentication, Authorization, and Accounting (AAA) Extensible Authentication Protocol (EAP) entity and an AAA PA entity, wherein the client node communicates with the AAA EAP entity using a RADIUS EAP exchange to authenticate the mobile node, and wherein the client node communicates with the AAA PA entity using a RADIUS PA exchange to authorize a prefix for the mobile node.