A novel haleness and efficiency method for return routability procedure in mobile IPv6

In mobile IPv6 (MIPv6), triangle routing can be eliminated by means of route optimization (RO). Return routability procedure is designed to guarantee the security of route optimization, because it enables the correspondent node to obtain some reasonable assurance that the mobile node is in fact addressable at its claimed care-of address. In this paper we discuss a novel method to perfect return routability procedure. The novel method provides a mechanism to make return routability procedure work well when the route between correspondent nodes and home agent or the route between home agent and mobile node is broken without any lowering security.