test_vpn:/etc/openvpn# tail -f /var/log/daemon.log

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: WARNING: the current --script-security setting may allow passwords to be passed to scripts via environmental variables

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: Diffie-Hellman initialized with 1024 bit key

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: WARNING: file '/etc/openvpn/key.pem' is group or others accessible

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: WARNING: POTENTIALLY DANGEROUS OPTION --client-cert-not-required may accept clients which do not present a certificate

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: /usr/bin/openssl-vulnkey -q -b 1024 -m <modulus omitted>

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: TLS-Auth MTU parms [ L:1576 D:140 EF:40 EB:0 ET:0 EL:0 ]

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: Note: Cannot open TUN/TAP dev /dev/net/tun: No such file or directory (errno=2)

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: Note: Attempting fallback to kernel 2.2 TUN/TAP interface

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: Cannot open TUN/TAP dev /dev/tap1: No such file or directory (errno=2)

Mar  5 11:43:31 test_vpn ovpn-tcp-server[31016]: Exiting