eap_identity or username attribute?

[James Xie]

HI,
I am debuging EAP-TLS module. Who can tell me FreeRadius should use which 
value(eap_identity and username attribute of radius packet) to authorize the 
supplicant? Now I am
using rlm_sql module to authorize the supplicant. Must I set username in database to 
eap_identity? If not, is there a safe hole? Thanks! 

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