Even when a node which can be moved among different networks and which sends a packet including a private address as a sender address sends the packet in either of networks, the sender address of the packet sent by the node is changed to a same global address. It can prevent that a correspondent node...http://www.google.com/patents/US20010036184?utm_source=gb-gplus-sharePatent US20010036184 - Method for packet communication and computer program stored on computer readable medium
