I have 2 NAS with different requirements in their WiMax handling.  One requires me to have:

               update request {

                      WiMAX-MN-NAI = "%{User-Name}"

               }

               update reply {

                       WiMax-MN-NAI = "%{User-Name}"

                       WiMax-IP-Technology = "CMIP4"

                       WiMAX-FA-RK-Key = 0x00

                       WiMAX-MSK = "%{EAP-MSK}"

             }

Enabled in order to work and the other requires those commented out.  Is there a way to identify the NAS type to  elegantly have those properly set?

David