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Request message combinations from NAS to AAA: LOCAL-bit HA-Address Meaning 0 - NAS is not able to assign a local HA 0 ASP-HA Same as above. HA-Address must be ignored 1 - NAS can/wishes to assign a local HA 1 ASP-HA Same as above and NAS also provides a hint of the assigned HA Answer message combinations from AAA to NAS: LOCAL-bit HA-Address Meaning 0 - No HA allowed -> no mobility 0 MSP-HA Local HA is not allowed. AAA assigns a HA 1 - Local HA is allowed. No AAA assigned HA 1 MSP-HA Local HA is allowed. AAA also assigns its own HA. NAS can choose whether to assign a local HA or the AAA provided HA to the mobile node MIP6-Feature-Vector and the assignment of Home Agents |