A route optimization method (300, 600) is described herein which is used by an IPv6 mobile node (402, 702) to communicate with another IPv6 node (404, 704) by transmitting and receiving IPv6 traffic within an IPv4/UDP bi-directional tunnel (407, 707) through an IP network (412, 712) without routing the...http://www.google.com/patents/US20080192758?utm_source=gb-gplus-sharePatent US20080192758 - Mobile Ipv6 Route Optimization in Different Address Spaces
