eapol_test with TLS fails (nothing sent to freeradius)

[freerad]

This command fails with timout:

config file: rad_eap_test.txt
network={
  ssid="eduroam"
  key_mgmt=IEEE8021X
  eap=TLS
  ca_cert="ca.pem"
  identity="wlan_test"
  password="test"
  client_cert="client.pem"
  private_key="client.key"
}

Openssl verify is ok:

# openssl verify -CAfile ca.pem client.pem
client.pem: OK

# bin/eapol_test -crad_eap_test.txt -a10.160.4.50 -p1812 -stesting123 -test
-M70:6f:6c:69:73:68

Reading configuration file 'rad_eap_test.txt'
Line: 1 - start of a new network block
ssid - hexdump_ascii(len=7):
     65 64 75 72 6f 61 6d                              eduroam
key_mgmt: 0x8
eap methods - hexdump(len=16): 00 00 00 00 0d 00 00 00 00 00 00 00 00 00 00
00
ca_cert - hexdump_ascii(len=6):
     63 61 2e 70 65 6d                                 ca.pem
identity - hexdump_ascii(len=9):
     77 6c 61 6e 5f 74 65 73 74                        wlan_test
client_cert - hexdump_ascii(len=10):
     63 6c 69 65 6e 74 2e 70 65 6d                     client.pem
private_key - hexdump_ascii(len=10):
     63 6c 69 65 6e 74 2e 6b 65 79                     client.key
Priority group 0
   id=0 ssid='eduroam'
Authentication server 10.160.4.50:1812
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: External notification - portValid=0
EAPOL: External notification - portEnabled=1
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: SUPP_BE entering state IDLE
EAP: EAP entering state INITIALIZE
EAP: EAP entering state IDLE
EAPOL test timed out
MPPE keys OK: 0  mismatch: 1
FAILURE


Any help is appreciated.
Thomas