v4/v6 transition and mobility Problem: NEMO MR finds itself on an IPv4 access network Needs to access IPv6 services through its Home Agent Tunneling mechanisms like Teredo/ISATAP can be used But… there are issues You end up with a NEMO tunnel through a transition tunnel Transition tunnel is between the MR and the transition router NEMO tunnel is between the MR and the HA If the MR moves and MR’s IPv4 access address changes, transition tunnel breaks Do we need a mobility mechanism for the transition tunnel? End with two levels of mobility Mobility for transition tunnel Mobility for NEMO tunnel |