Method and apparatus for facilitating network mobility

Various embodiments are described for facilitating network mobility in communication networks with an aim toward enhancing the scalability of MIP. Generally, in most of these embodiments, a network node sends a message to a network device to establish a data path for a remote unit served by the network node. This message comprises a source link layer address which is associated with the remote unit. The message may or may not be sent in response to receiving signaling to facilitate wireless connectivity of a remote unit via the network node. In addition, the network device to which the message is sent may be an access router (AR) or a foreign agent (FA) of the remote unit.