openVPN Could not determine IPv4/IPv6 protocol. Using AF_INET

vpn openvpn linux-networking ubuntu-18.04 vpn-client
34,814

This message is printed when no IPv4/v6 preference is given in the config (i.e. proto udp/tcp is used) and OpenVPN is running as a server. Just change in server.conf on what you need udp4/upd6:

;proto udp
proto udp4

Updated: For tcp protocol (not udp) just change in server.conf on what you need tcp4/tcp6:

;proto tcp
proto tcp4
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DaVinci007
Author by

DaVinci007

Updated on September 18, 2022

Comments

  • DaVinci007
    DaVinci007 over 1 year

    I am having issues connecting to my VPN, with port forwarding set correctly as I can VPN into my other lubuntu machine, also UFW is disabled. Can someone please guide my as to what I am missing in my config?? Also additionally when i turn on my UFW i can ping WAN or websites by names like google.com, but cannot ping workgroup computers by name but only when i add ".local" suffix with computer names i can ping in LAN.

    I hope the above question is not connected to my openVPN configuration. As this is networking issue i felt to add the UFW issue too. Below is my detailed config :

    Hi there here is my openvpn.log file :

    Thu Jun 13 16:54:01 2019 OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Jan  9 2019
Thu Jun 13 16:54:01 2019 library versions: OpenSSL 1.1.1  11 Sep 2018, LZO 2.08
Thu Jun 13 16:54:01 2019 Diffie-Hellman initialized with 2048 bit key
Thu Jun 13 16:54:01 2019 Outgoing Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
Thu Jun 13 16:54:01 2019 Incoming Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
Thu Jun 13 16:54:01 2019 ROUTE_GATEWAY 10.0.0.1/255.255.255.0 IFACE=enp1s0 HWADDR=e0:d5:5e:ed:f5:63
Thu Jun 13 16:54:01 2019 TUN/TAP device tun0 opened
Thu Jun 13 16:54:01 2019 TUN/TAP TX queue length set to 100
Thu Jun 13 16:54:01 2019 do_ifconfig, tt->did_ifconfig_ipv6_setup=0
Thu Jun 13 16:54:01 2019 /sbin/ip link set dev tun0 up mtu 1500
Thu Jun 13 16:54:01 2019 /sbin/ip addr add dev tun0 local 10.8.0.1 peer 10.8.0.2
Thu Jun 13 16:54:01 2019 /sbin/ip route add 10.8.0.0/24 via 10.8.0.2
Thu Jun 13 16:54:01 2019 Could not determine IPv4/IPv6 protocol. Using AF_INET
Thu Jun 13 16:54:01 2019 Socket Buffers: R=[87380->87380] S=[16384->16384]
Thu Jun 13 16:54:01 2019 Listening for incoming TCP connection on [AF_INET][undef]:1194
Thu Jun 13 16:54:01 2019 TCPv4_SERVER link local (bound): [AF_INET][undef]:1194
Thu Jun 13 16:54:01 2019 TCPv4_SERVER link remote: [AF_UNSPEC]
Thu Jun 13 16:54:01 2019 GID set to root
Thu Jun 13 16:54:01 2019 UID set to owner
Thu Jun 13 16:54:01 2019 MULTI: multi_init called, r=256 v=256
Thu Jun 13 16:54:01 2019 IFCONFIG POOL: base=10.8.0.4 size=62, ipv6=0
Thu Jun 13 16:54:01 2019 IFCONFIG POOL LIST
Thu Jun 13 16:54:01 2019 MULTI: TCP INIT maxclients=1024 maxevents=1028
Thu Jun 13 16:54:01 2019 Initialization Sequence Completed

    my server.conf file :

    port 1194
proto tcp
dev tun
ca ca.crt
cert server.crt
key server.key  # This file should be kept secret
dh dh2048.pem
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist /var/log/openvpn/ipp.txt
tls-auth ta.key 0 # This file is secret
key-direction 0
cipher AES-128-CBC
auth SHA256
comp-lzo
user owner
group root
persist-key
persist-tun
status /var/log/openvpn/openvpn-status.log
log-append  /var/log/openvpn/openvpn.log
verb 3

    Heres my ifconfig :

    enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.0.201  netmask 255.255.255.0  broadcast 10.0.0.255
        inet6 fe80::29bb:768f:77ea:c4fe  prefixlen 64  scopeid 0x20<link>
        ether e0:d5:5e:ed:f5:63  txqueuelen 1000  (Ethernet)
        RX packets 14381  bytes 8571949 (8.5 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 11387  bytes 1826373 (1.8 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 2333  bytes 233564 (233.5 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2333  bytes 233564 (233.5 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

tun0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST>  mtu 1500
        inet 10.8.0.1  netmask 255.255.255.255  destination 10.8.0.2
        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 100  (UNSPEC)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    Heres my client log :

    2019-06-13 16:42:06 Building configuration…
2019-06-13 16:42:06 started Socket Thread
2019-06-13 16:42:06 WARNING:  Compression enabled, Compression has been used in the past to break encryption. Enabling decompression of received packet only. Sent packets are not compressed.
2019-06-13 16:42:06 Current Parameter Settings:
2019-06-13 16:42:06   config = '/data/user/0/de.blinkt.openvpn/cache/android.conf'
2019-06-13 16:42:06   mode = 0
2019-06-13 16:42:06   show_ciphers = DISABLED
2019-06-13 16:42:06   show_digests = DISABLED
2019-06-13 16:42:06   show_engines = DISABLED
2019-06-13 16:42:06   genkey = DISABLED
2019-06-13 16:42:06   key_pass_file = '[UNDEF]'
2019-06-13 16:42:06   show_tls_ciphers = DISABLED
2019-06-13 16:42:06   connect_retry_max = 0
2019-06-13 16:42:06 Connection profiles [0]:
2019-06-13 16:42:06   proto = tcp-client
2019-06-13 16:42:06   local = '[UNDEF]'
2019-06-13 16:42:06   local_port = '[UNDEF]'
2019-06-13 16:42:06   remote = 'sg10.ddns.net'
2019-06-13 16:42:06   remote_port = '1194'
2019-06-13 16:42:06   remote_float = DISABLED
2019-06-13 16:42:06   bind_defined = DISABLED
2019-06-13 16:42:06   bind_local = DISABLED
2019-06-13 16:42:06   bind_ipv6_only = DISABLED
2019-06-13 16:42:06   connect_retry_seconds = 2
2019-06-13 16:42:06   connect_timeout = 120
2019-06-13 16:42:06   socks_proxy_server = '[UNDEF]'
2019-06-13 16:42:06   socks_proxy_port = '[UNDEF]'
2019-06-13 16:42:06   tun_mtu = 1500
2019-06-13 16:42:06   tun_mtu_defined = ENABLED
2019-06-13 16:42:06   link_mtu = 1500
2019-06-13 16:42:06   link_mtu_defined = DISABLED
2019-06-13 16:42:06   tun_mtu_extra = 0
2019-06-13 16:42:06   tun_mtu_extra_defined = DISABLED
2019-06-13 16:42:06   mtu_discover_type = -1
2019-06-13 16:42:06   fragment = 0
2019-06-13 16:42:06   mssfix = 1450
2019-06-13 16:42:06   explicit_exit_notification = 0
2019-06-13 16:42:06   tls_auth_file = '[[INLINE]]'
2019-06-13 16:42:06   key_direction = 1
2019-06-13 16:42:06   tls_crypt_file = '[UNDEF]'
2019-06-13 16:42:06   tls_crypt_v2_file = '[UNDEF]'
2019-06-13 16:42:06 Connection profiles END
2019-06-13 16:42:06   remote_random = DISABLED
2019-06-13 16:42:06   ipchange = '[UNDEF]'
2019-06-13 16:42:06   dev = 'tun'
2019-06-13 16:42:06   dev_type = '[UNDEF]'
2019-06-13 16:42:06   dev_node = '[UNDEF]'
2019-06-13 16:42:06   lladdr = '[UNDEF]'
2019-06-13 16:42:06   topology = 1
2019-06-13 16:42:06   ifconfig_local = '[UNDEF]'
2019-06-13 16:42:06   ifconfig_remote_netmask = '[UNDEF]'
2019-06-13 16:42:06   ifconfig_noexec = DISABLED
2019-06-13 16:42:06   ifconfig_nowarn = ENABLED
2019-06-13 16:42:06   ifconfig_ipv6_local = '[UNDEF]'
2019-06-13 16:42:06   ifconfig_ipv6_netbits = 0
2019-06-13 16:42:06   ifconfig_ipv6_remote = '[UNDEF]'
2019-06-13 16:42:06   shaper = 0
2019-06-13 16:42:06   mtu_test = 0
2019-06-13 16:42:06   mlock = DISABLED
2019-06-13 16:42:06   keepalive_ping = 0
2019-06-13 16:42:06   keepalive_timeout = 0
2019-06-13 16:42:06   inactivity_timeout = 0
2019-06-13 16:42:06   ping_send_timeout = 0
2019-06-13 16:42:06   ping_rec_timeout = 0
2019-06-13 16:42:06   ping_rec_timeout_action = 0
2019-06-13 16:42:06   ping_timer_remote = DISABLED
2019-06-13 16:42:06   remap_sigusr1 = 0
2019-06-13 16:42:06   persist_tun = ENABLED
2019-06-13 16:42:06   persist_local_ip = DISABLED
2019-06-13 16:42:06   persist_remote_ip = DISABLED
2019-06-13 16:42:06   persist_key = DISABLED
2019-06-13 16:42:06   passtos = DISABLED
2019-06-13 16:42:06   resolve_retry_seconds = 1000000000
2019-06-13 16:42:06   resolve_in_advance = ENABLED
2019-06-13 16:42:06   username = '[UNDEF]'
2019-06-13 16:42:06   groupname = '[UNDEF]'
2019-06-13 16:42:06   chroot_dir = '[UNDEF]'
2019-06-13 16:42:06   cd_dir = '[UNDEF]'
2019-06-13 16:42:06   writepid = '[UNDEF]'
2019-06-13 16:42:06   up_script = '[UNDEF]'
2019-06-13 16:42:06   down_script = '[UNDEF]'
2019-06-13 16:42:06   down_pre = DISABLED
2019-06-13 16:42:06   up_restart = DISABLED
2019-06-13 16:42:06   up_delay = DISABLED
2019-06-13 16:42:06   daemon = DISABLED
2019-06-13 16:42:06   inetd = 0
2019-06-13 16:42:06   log = DISABLED
2019-06-13 16:42:06   suppress_timestamps = DISABLED
2019-06-13 16:42:06   machine_readable_output = ENABLED
2019-06-13 16:42:06   nice = 0
2019-06-13 16:42:06   verbosity = 4
2019-06-13 16:42:06   mute = 0
2019-06-13 16:42:06   gremlin = 0
2019-06-13 16:42:06   status_file = '[UNDEF]'
2019-06-13 16:42:06   status_file_version = 1
2019-06-13 16:42:06   status_file_update_freq = 60
2019-06-13 16:42:06   occ = ENABLED
2019-06-13 16:42:06   rcvbuf = 0
2019-06-13 16:42:06   sndbuf = 0
2019-06-13 16:42:06   sockflags = 0
2019-06-13 16:42:06   fast_io = DISABLED
2019-06-13 16:42:06   comp.alg = 2
2019-06-13 16:42:06   comp.flags = 1
2019-06-13 16:42:06   route_script = '[UNDEF]'
2019-06-13 16:42:06   route_default_gateway = '[UNDEF]'
2019-06-13 16:42:06   route_default_metric = 0
2019-06-13 16:42:06   route_noexec = DISABLED
2019-06-13 16:42:06   route_delay = 0
2019-06-13 16:42:06   route_delay_window = 30
2019-06-13 16:42:06   route_delay_defined = DISABLED
2019-06-13 16:42:06   route_nopull = DISABLED
2019-06-13 16:42:06   route_gateway_via_dhcp = DISABLED
2019-06-13 16:42:06   allow_pull_fqdn = DISABLED
2019-06-13 16:42:06   management_addr = '/data/user/0/de.blinkt.openvpn/cache/mgmtsocket'
2019-06-13 16:42:06   management_port = 'unix'
2019-06-13 16:42:06   management_user_pass = '[UNDEF]'
2019-06-13 16:42:06   management_log_history_cache = 250
2019-06-13 16:42:06   management_echo_buffer_size = 100
2019-06-13 16:42:06   management_write_peer_info_file = '[UNDEF]'
2019-06-13 16:42:06   management_client_user = '[UNDEF]'
2019-06-13 16:42:06   management_client_group = '[UNDEF]'
2019-06-13 16:42:06   management_flags = 16678
2019-06-13 16:42:06   shared_secret_file = '[UNDEF]'
2019-06-13 16:42:06   key_direction = 1
2019-06-13 16:42:06   ciphername = 'AES-128-CBC'
2019-06-13 16:42:06   ncp_enabled = ENABLED
2019-06-13 16:42:06   ncp_ciphers = 'AES-256-GCM:AES-128-GCM'
2019-06-13 16:42:06   authname = 'SHA256'
2019-06-13 16:42:06   prng_hash = 'SHA1'
2019-06-13 16:42:06   prng_nonce_secret_len = 16
2019-06-13 16:42:06   keysize = 0
2019-06-13 16:42:06   engine = DISABLED
2019-06-13 16:42:06   replay = ENABLED
2019-06-13 16:42:06   mute_replay_warnings = DISABLED
2019-06-13 16:42:06   replay_window = 64
2019-06-13 16:42:06   replay_time = 15
2019-06-13 16:42:06   packet_id_file = '[UNDEF]'
2019-06-13 16:42:06   test_crypto = DISABLED
2019-06-13 16:42:06   tls_server = DISABLED
2019-06-13 16:42:06   tls_client = ENABLED
2019-06-13 16:42:06   key_method = 2
2019-06-13 16:42:06   ca_file = '[[INLINE]]'
2019-06-13 16:42:06   ca_path = '[UNDEF]'
2019-06-13 16:42:06   dh_file = '[UNDEF]'
2019-06-13 16:42:06   cert_file = '[[INLINE]]'
2019-06-13 16:42:06   extra_certs_file = '[UNDEF]'
2019-06-13 16:42:06   priv_key_file = '[[INLINE]]'
2019-06-13 16:42:06   pkcs12_file = '[UNDEF]'
2019-06-13 16:42:06   cipher_list = '[UNDEF]'
2019-06-13 16:42:06   cipher_list_tls13 = '[UNDEF]'
2019-06-13 16:42:06   tls_cert_profile = '[UNDEF]'
2019-06-13 16:42:06   tls_verify = '[UNDEF]'
2019-06-13 16:42:06   tls_export_cert = '[UNDEF]'
2019-06-13 16:42:06   verify_x509_type = 0
2019-06-13 16:42:06   verify_x509_name = '[UNDEF]'
2019-06-13 16:42:06   crl_file = '[UNDEF]'
2019-06-13 16:42:06   ns_cert_type = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 65535
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_ku[i] = 0
2019-06-13 16:42:06   remote_cert_eku = 'TLS Web Server Authentication'
2019-06-13 16:42:06   ssl_flags = 0
2019-06-13 16:42:06   tls_timeout = 2
2019-06-13 16:42:06   renegotiate_bytes = -1
2019-06-13 16:42:06   renegotiate_packets = 0
2019-06-13 16:42:06   renegotiate_seconds = 3600
2019-06-13 16:42:06   handshake_window = 60
2019-06-13 16:42:06   transition_window = 3600
2019-06-13 16:42:06   single_session = DISABLED
2019-06-13 16:42:06   push_peer_info = DISABLED
2019-06-13 16:42:06   tls_exit = DISABLED
2019-06-13 16:42:06   tls_crypt_v2_genkey_type = '[UNDEF]'
2019-06-13 16:42:06   tls_crypt_v2_genkey_file = '[UNDEF]'
2019-06-13 16:42:06   tls_crypt_v2_metadata = '[UNDEF]'
2019-06-13 16:42:06   client = ENABLED
2019-06-13 16:42:06   pull = ENABLED
2019-06-13 16:42:06   auth_user_pass_file = '[UNDEF]'
2019-06-13 16:42:06 OpenVPN 2.5-icsopenvpn [git:icsopenvpn/v0.7.8-0-g168367a5] arm64-v8a [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [MH/PKTINFO] [AEAD] built on Feb 22 2019
2019-06-13 16:42:06 library versions: OpenSSL 1.1.1a  20 Nov 2018, LZO 2.10
2019-06-13 16:42:06 MANAGEMENT: Connected to management server at /data/user/0/de.blinkt.openvpn/cache/mgmtsocket
2019-06-13 16:42:06 MANAGEMENT: CMD 'version 3'
2019-06-13 16:42:06 MANAGEMENT: CMD 'hold release'
2019-06-13 16:42:07 MANAGEMENT: CMD 'bytecount 2'
2019-06-13 16:42:07 MANAGEMENT: CMD 'proxy NONE'
2019-06-13 16:42:07 MANAGEMENT: CMD 'state on'
2019-06-13 16:42:07 Network Status: CONNECTED LTE to MOBILE www
2019-06-13 16:42:07 Debug state info: CONNECTED LTE to MOBILE www, pause: userPause, shouldbeconnected: true, network: SHOULDBECONNECTED
2019-06-13 16:42:07 Debug state info: CONNECTED LTE to MOBILE www, pause: userPause, shouldbeconnected: true, network: SHOULDBECONNECTED
2019-06-13 16:42:08 Outgoing Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
2019-06-13 16:42:08 Incoming Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
2019-06-13 16:42:08 LZO compression initializing
2019-06-13 16:42:08 Control Channel MTU parms [ L:1624 D:1170 EF:80 EB:0 ET:0 EL:3 ]
2019-06-13 16:42:08 Data Channel MTU parms [ L:1624 D:1450 EF:124 EB:406 ET:0 EL:3 ]
2019-06-13 16:42:08 Local Options String (VER=V4): 'V4,dev-type tun,link-mtu 1572,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,keydir 1,cipher AES-128-CBC,auth SHA256,keysize 128,tls-auth,key-method 2,tls-client'
2019-06-13 16:42:08 Expected Remote Options String (VER=V4): 'V4,dev-type tun,link-mtu 1572,tun-mtu 1500,proto TCPv4_SERVER,comp-lzo,keydir 0,cipher AES-128-CBC,auth SHA256,keysize 128,tls-auth,key-method 2,tls-server'
2019-06-13 16:42:08 TCP/UDP: Preserving recently used remote address: [AF_INET6]64:ff9b::b639:694a:1194
2019-06-13 16:42:08 Socket Buffers: R=[4194304->4194304] S=[524288->524288]
2019-06-13 16:42:08 Attempting to establish TCP connection with [AF_INET6]64:ff9b::b639:694a:1194 [nonblock]
2019-06-13 16:42:08 MANAGEMENT: >STATE:1560424328,TCP_CONNECT,,,,,,
2019-06-13 16:42:08 MANAGEMENT: CMD 'needok 'PROTECTFD' ok'
2019-06-13 16:42:09 TCP connection established with [AF_INET6]64:ff9b::b639:694a:1194
2019-06-13 16:42:09 MANAGEMENT: CMD 'needok 'PROTECTFD' ok'
2019-06-13 16:42:09 TCP_CLIENT link local: (not bound)
2019-06-13 16:42:09 TCP_CLIENT link remote: [AF_INET6]64:ff9b::b639:694a:1194
2019-06-13 16:42:09 MANAGEMENT: >STATE:1560424329,WAIT,,,,,,
2019-06-13 16:42:09 Connection reset, restarting [0]
2019-06-13 16:42:09 TCP/UDP: Closing socket
2019-06-13 16:42:09 SIGUSR1[soft,connection-reset] received, process restarting
2019-06-13 16:42:09 Waiting 2s seconds between connection attempt
2019-06-13 16:42:09 MANAGEMENT: >STATE:1560424329,RECONNECTING,connection-reset,,,,,
2019-06-13 16:42:14 MANAGEMENT: CMD 'hold release'
2019-06-13 16:42:14 MANAGEMENT: CMD 'proxy NONE'
2019-06-13 16:42:14 MANAGEMENT: CMD 'bytecount 2'
2019-06-13 16:42:14 MANAGEMENT: CMD 'state on'
2019-06-13 16:42:15 Outgoing Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
2019-06-13 16:42:15 Incoming Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication
2019-06-13 16:42:15 LZO compression initializing
2019-06-13 16:42:15 Control Channel MTU parms [ L:1624 D:1170 EF:80 EB:0 ET:0 EL:3 ]
2019-06-13 16:42:15 Data Channel MTU parms [ L:1624 D:1450 EF:124 EB:406 ET:0 EL:3 ]
2019-06-13 16:42:15 Local Options String (VER=V4): 'V4,dev-type tun,link-mtu 1572,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,keydir 1,cipher AES-128-CBC,auth SHA256,keysize 128,tls-auth,key-method 2,tls-client'
2019-06-13 16:42:15 Expected Remote Options String (VER=V4): 'V4,dev-type tun,link-mtu 1572,tun-mtu 1500,proto TCPv4_SERVER,comp-lzo,keydir 0,cipher AES-128-CBC,auth SHA256,keysize 128,tls-auth,key-method 2,tls-server'
2019-06-13 16:42:15 TCP/UDP: Preserving recently used remote address: [AF_INET]182.57.105.74:1194
2019-06-13 16:42:15 Socket Buffers: R=[4194304->4194304] S=[524288->524288]
2019-06-13 16:42:15 Attempting to establish TCP connection with [AF_INET]182.57.105.74:1194 [nonblock]
2019-06-13 16:42:15 MANAGEMENT: >STATE:1560424335,TCP_CONNECT,,,,,,
2019-06-13 16:42:15 MANAGEMENT: CMD 'needok 'PROTECTFD' ok'
2019-06-13 16:42:16 TCP connection established with [AF_INET]182.57.105.74:1194
2019-06-13 16:42:16 MANAGEMENT: CMD 'needok 'PROTECTFD' ok'
2019-06-13 16:42:16 TCP_CLIENT link local: (not bound)
2019-06-13 16:42:16 TCP_CLIENT link remote: [AF_INET]182.57.105.74:1194
2019-06-13 16:42:16 MANAGEMENT: >STATE:1560424336,WAIT,,,,,,
2019-06-13 16:42:16 Connection reset, restarting [0]
2019-06-13 16:42:16 TCP/UDP: Closing socket
2019-06-13 16:42:16 SIGUSR1[soft,connection-reset] received, process restarting
2019-06-13 16:42:16 Waiting 2s seconds between connection attempt
  • Michael Hampton
    Michael Hampton almost 5 years
    Don't bother with ifconfig. It's obsolete anyway, that's why it is not installed by default. You should be using ip commands instead.
  • Joffrey
    Joffrey over 4 years
    This is a TCP configuration and the IPv6 to IPv4 failover seems to be working in the client logfiles. This does not seem to be the answer the question poster is looking for.
  • Ruslan Novikov
    Ruslan Novikov over 4 years
    Thank you Joffrey, I updated my answer. See above. OpenVPN didn't work for me with the same question poster, and I'm sharing a solution that help me.
  • mivk
    mivk over 2 years
    Also, note that it is not an error, just an information on which address family was chosen. See also here: community.openvpn.net/openvpn/ticket/805

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