Comment 4 for bug 1636892

I think this is the relevant chunk of FreeRADIUS output:

(11) Found Auth-Type = EAP
(11) # Executing group from file /etc/freeradius/sites-enabled/abfab-tr-idp
(11) authenticate {
(11) eap: Expiring EAP session with state 0x07d0c74c07d1d27d
(11) eap: Finished EAP session with state 0x07d0c74c07d1d27d
(11) eap: Previous EAP request found for state 0x07d0c74c07d1d27d, released from the list
(11) eap: Peer sent packet with method EAP NAK (3)
(11) eap: Peer NAK'd indicating it is not willing to continue
(11) eap: Sending EAP Failure (code 4) ID 1 length 4
(11) eap: Failed in EAP select
(11) [eap] = invalid
(11) } # authenticate = invalid
(11) Failed to authenticate the user
(11) Using Post-Auth-Type Reject

... but, I'll attach a fuller copy of the log messages for you, in case my guess of the relevant part is wrong.