IETF Mobile IP Working Group David B . Johnson INTERNET - DRAFT Carnegie Mellon University

This document specifies the operation of mobile computers using IPv6. Each mobile node is always identified by its home address, regardless of its current point of attachment to the Internet. While situated away from its home, a mobile node is also associated with a care-of address, which provides information about the mobile node’s current location. IPv6 packets addressed to a mobile node’s home address are transparently routed to its care-of address. The protocol enables IPv6 nodes to cache the binding of a mobile node’s home address with its care-of address, and to then send any packets destined for the mobile node directly to it at this care-of address. To support this operation, Mobile IPv6 defines four new IPv6 destination options, including one that MUST be supported in packets received by any node, whether mobile or stationary. Johnson and Perkins Expires 25 December 1999 [Page i] INTERNET-DRAFT Mobility Support in IPv6 25 June 1999