Is pkcs8 file format supported

Hi, I am using pkcs8 file format in private key file (eap config file) placeholder. private_key_file = ${certdir}/*DevFromRoot-Server-AABBCCDD.pkcs8* But after that when i restart freeradius i get the following error: *rlm_eap: SSL error error:0906D06C:PEM routines:PEM_read_bio:no start line* *rlm_eap_tls: Error reading private key file /etc/freeradius/certs/DevFromRoot-Server-AABBCCDD.pkcs8* *rlm_eap: Failed to initialize type tls* */etc/freeradius/eap.conf[17]: Instantiation failed for module "eap"* */etc/freeradius/sites-enabled/default[310]: Failed to load module "eap".* If i use the .pem file format it works! Regards Sumant