eap_peer_config::private_key2 field

private_key2 - File path to client private key file This field is like private_key, but used for phase 2 (inside EAP-TTLS/PEAP/FAST tunnel) authentication. Full path to the file should be used since working directory may change when wpa_supplicant is run in the background. Alternatively, a named configuration blob can be used by setting this to blob://blob_name.