Есть следующая схема:

[Железяка с линухом Дебиан]-[USB 3G Modem] ---Интернет--- [Роутер микротик]-[домашняя сеть]
Выписал ключи.
На микротике настроил OpenVPN сервер.
На Линуксовой железяке клиент.

Конфиг клиента:
clientавтор;dev tap
dev tun
proto tcp-client
;proto udp
remote 176.15.xxx.xxx 1194
resolv-retry infinite
nobind
user pi
group openvpn
persist-key
persist-tun
ca /etc/openvpn/keys/ca.crt
cert /etc/openvpn/keys/VPN_Client.crt
key /etc/openvpn/keys/VPN_Client.key
tls-client
ns-cert-type server
cipher AES-256-CBC
auth SHA1
pull
comp-lzo
verb 3
log /var/log/openvpn/openvpn-status.log
route-method exe
route-delay 2
auth-user-pass rampvpn


Лог подключения на линуксе(дебиан):
авторWed Jul 22 19:18:32 2015 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Wed Jul 22 19:18:32 2015 Re-using SSL/TLS context
Wed Jul 22 19:18:32 2015 LZO compression initialized
Wed Jul 22 19:18:32 2015 Control Channel MTU parms [ L:1560 D:140 EF:40 EB:0 ET:0 EL:0 ]
Wed Jul 22 19:18:32 2015 Socket Buffers: R=[87380->131072] S=[16384->131072]
Wed Jul 22 19:18:32 2015 Data Channel MTU parms [ L:1560 D:1450 EF:60 EB:135 ET:0 EL:0 AF:3/1 ]
Wed Jul 22 19:18:32 2015 Local Options hash (VER=V4): '958c5492'
Wed Jul 22 19:18:32 2015 Expected Remote Options hash (VER=V4): '79ef4284'
Wed Jul 22 19:18:32 2015 Attempting to establish TCP connection with [AF_INET]176.15.116.223:1194 [nonblock]
Wed Jul 22 19:18:33 2015 TCP connection established with [AF_INET]176.15.116.223:1194
Wed Jul 22 19:18:33 2015 TCPv4_CLIENT link local: [undef]
Wed Jul 22 19:18:33 2015 TCPv4_CLIENT link remote: [AF_INET]176.15.116.223:1194
Wed Jul 22 19:18:33 2015 Connection reset, restarting [0]
Wed Jul 22 19:18:33 2015 TCP/UDP: Closing socket
Wed Jul 22 19:18:33 2015 SIGUSR1[soft,connection-reset] received, process restarting
Wed Jul 22 19:18:33 2015 Restart pause, 5 second(s)

с бОльшим уровнем логирования:
авторWed Jul 22 21:10:34 2015 us=827191 TLS: tls_multi_process: i=2 state=S_UNDEF, mysid=00000000 00000000, stored-sid=00000000 00000000, stored-ip=[undef]
Wed Jul 22 21:10:34 2015 us=827420 RANDOM USEC=208913
Wed Jul 22 21:10:34 2015 us=827602 STREAM: SET NEXT, buf=[64,0] next=[64,1559] len=-1 maxlen=1559
Wed Jul 22 21:10:34 2015 us=827768 PO_CTL rwflags=0x0003 ev=4 arg=0xb6f960c4
Wed Jul 22 21:10:34 2015 us=827953 I/O WAIT T?|T?|SR|SW [1/208913]
Wed Jul 22 21:10:34 2015 us=828153 PO_WAIT[0,0] fd=4 rev=0x00000005 rwflags=0x0003 arg=0xb6f960c4
Wed Jul 22 21:10:34 2015 us=828317 event_wait returned 1
Wed Jul 22 21:10:34 2015 us=828478 I/O WAIT status=0x0003
Wed Jul 22 21:10:34 2015 us=828729 TCPv4_CLIENT WRITE [14] to [AF_INET]176.15.116.223:1194: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 sid=12d2d70c a8dafeee [ ] pid=0 DATA
Wed Jul 22 21:10:34 2015 us=828891 STREAM: WRITE 14 offset=26
Wed Jul 22 21:10:34 2015 us=829327 TCPv4_CLIENT write returned 16
Wed Jul 22 21:10:34 2015 us=829896 TLS: tls_multi_process: i=0 state=S_PRE_START, mysid=12d2d70c a8dafeee, stored-sid=00000000 00000000, stored-ip=[AF_INET]176.15.116.223:1194
Wed Jul 22 21:10:34 2015 us=830100 TLS: tls_process: chg=0 ks=S_PRE_START lame=S_UNDEF to_link->len=0 wakeup=604800
Wed Jul 22 21:10:34 2015 us=830279 ACK reliable_can_send active=1 current=0 : [1] 0
Wed Jul 22 21:10:34 2015 us=830665 SSL state (connect): before/connect initialization
Wed Jul 22 21:10:34 2015 us=831044 SSL state (connect): SSLv3 write client hello A
Wed Jul 22 21:10:34 2015 us=831304 ACK reliable_send_timeout 2 [1] 0
Wed Jul 22 21:10:34 2015 us=831475 TLS: tls_process: timeout set to 2
Wed Jul 22 21:10:34 2015 us=831708 TLS: tls_multi_process: i=1 state=S_INITIAL, mysid=579935cf 32c8ea43, stored-sid=00000000 00000000, stored-ip=[undef]
Wed Jul 22 21:10:34 2015 us=831943 TLS: tls_multi_process: i=2 state=S_UNDEF, mysid=00000000 00000000, stored-sid=00000000 00000000, stored-ip=[undef]
Wed Jul 22 21:10:34 2015 us=832130 STREAM: SET NEXT, buf=[64,0] next=[64,1559] len=-1 maxlen=1559
Wed Jul 22 21:10:34 2015 us=832295 PO_CTL rwflags=0x0001 ev=4 arg=0xb6f960c4
Wed Jul 22 21:10:34 2015 us=832483 I/O WAIT T?|T?|SR|Sw [1/208913]
Wed Jul 22 21:10:34 2015 us=832682 PO_WAIT[0,0] fd=4 rev=0x00000019 rwflags=0x0001 arg=0xb6f960c4
Wed Jul 22 21:10:34 2015 us=832956 event_wait returned 1
Wed Jul 22 21:10:34 2015 us=833128 I/O WAIT status=0x0001
Wed Jul 22 21:10:34 2015 us=833285 STREAM: GET NEXT len=1559
Wed Jul 22 21:10:34 2015 us=833595 Connection reset, restarting [0]
Wed Jul 22 21:10:34 2015 us=833808 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=834121 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=834295 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=834447 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=834688 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=834858 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=835015 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=835168 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=835326 TCP/UDP: Closing socket
Wed Jul 22 21:10:34 2015 us=835574 PID packet_id_free
Wed Jul 22 21:10:34 2015 us=835773 SIGUSR1[soft,connection-reset] received, process restarting
Wed Jul 22 21:10:34 2015 us=835974 Restart pause, 5 second(s)

на стороне Микротика в логе сплошные: TCP connection established. и все.

вопрос, что - делать? :)