Abstract:Design and implementation of a portable Mobile IPv6 protocol stack (MultiPlat-MIPv6) is presented in detail. A simple transplanting method of Mobile IPv6 protocol stack was brought up, in witch Mobile IPv6 protocol stack includes the universal and the particular modules. Transplanting is simplified to change the particular modules. The security mechanism in this protocol stack is also given simply. It is helpful for the development of network protocol stacks and mobile network devices on different operating system platform.