A system and method of transmitting information between a mobile node and a home
agent of the mobile node. The mobile node has an associated home AAA server. The
address of the HAAA is determined. The HAAA is contacted and, responsively, receives
information indicating a methodology of determining the home address of the mobile
node. A proxy server determines the address of the home agent using information
received from the PDSN. The information is routed from the mobile node to the home
agent having the address.