auth-user-pass /config/openvpn-credentials.txt remote czech.vpn.blackvpn.com 443 tcp nobind client dev tun fast-io persist-key persist-tun cipher AES-256-CBC txqueuelen 486 sndbuf 1655368 rcvbuf 1655368 auth SHA512 pull comp-lzo tls-client key-method 2 ns-cert-type server ca /etc/openvpn/blackvpn/ssl/ca.crt tls-auth /etc/openvpn/blackvpn/ssl/ta.key 1 verb 3 mute 10 script-security 2 ifconfig-ipv6 fd69:2205:1941:1::1/64 fd69:2205:1941:1::2 route-ipv6 ::/128 ::1ping-restart 30