As a workaround for this issue, perform these steps:
Note: For accounting, the port must be 1813.
Also, a WEP key must be in Native mode as part of the local LEAP configuration.
For more information, refer to the Troubleshooting Procedure section of LEAP Authentication with Local RADIUS Server.
Client / Device cannot authenticate
LEAP / RADIUS
Bad request from NAS, failure code invalid message authenticator in EAP request