Patent ID: 7333461

Claim:
A mobile router of a mobile network, the mobile router comprising: a network interface circuit; and a routing circuit configured for attaching to a first router based on receiving a router advertisement message from the first router that specifies a first router address prefix, the routing circuit further configured for: generating a mobile router advertisement message specifying a null address prefix that is not reachable from the wide area network via the first router, receiving a message from a mobile host having a destination address field that specifies a destination address reachable via the wide area network, and a source address field having a mobile host care-of address that specifies the null address prefix, and modifying the message to a modified message by adding the mobile host care-of address to a reverse routing header and inserting a care-of address for the mobile router, that specifies the first router address prefix, to the source address field; the network interface circuit configured for outputting the modified message containing the reverse routing header to the first router for delivery to the destination address.