1. A method for maintaining mapping between entities within a media-independent handover (MIH) environment, the method comprising: accessing a mapping table corresponding to a MIH function to obtain at least one transport address corresponding to a peer MIH function, wherein the at least one transport address corresponding to the peer MIH function is used by a MIH transport protocol to maintain mapping between an identifier identifying the peer MIH function and said transport address; and invoking an operation regarding a mapping of the at least one transport address in the mapping table based on a change of a status of the peer MIH function, wherein invoking an append operation to append the transport address, specified by the MIH function with which the mapping is associated, when determined that the operation pertains to a peer MIH function configured to simultaneously use multiple interfaces having different transport addresses.