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Запуск сервера OpenVPN с большим количеством подключенных клиентов Ubuntu

У меня есть один экземпляр сервера OpenVPN, работающий на компьютере под управлением Ubuntu с большим количеством клиентов (~ 500), подключенных через UDP. Клиентские соединения стабильны, пока я не перезапущу службу OpenVPN на стороне сервера. После этого клиенты продолжают подключаться и отключаться, и никогда не смогут снова достичь того же количества подключений. Что может быть причиной ? Соединения на стороне клиента продолжают время ожидания, никогда не получая ответов на свои начальные сообщения. Журналы от одного из клиентов:

Wed Apr 22 10:16:14 2020 us=209975 [31956] Control Channel MTU parms [ L:1570 D:138 EF:38 EB:0 ET:0 EL:0 ]
Wed Apr 22 10:16:14 2020 us=210010 [31956] Socket Buffers: R=[229376->131072] S=[229376->131072]
Wed Apr 22 10:16:14 2020 us=210029 [31956] Data Channel MTU parms [ L:1570 D:1450 EF:70 EB:135 ET:0 EL:0 AF:3/1 ]
Wed Apr 22 10:16:14 2020 us=210052 [31956] Local Options String: 'V4,dev-type tun,link-mtu 1570,tun-mtu 1500,proto UDPv4,comp-lzo,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-client'
Wed Apr 22 10:16:14 2020 us=210060 [31956] Expected Remote Options String: 'V4,dev-type tun,link-mtu 1570,tun-mtu 1500,proto UDPv4,comp-lzo,cipher AES-128-CBC,auth SHA256,keysize 128,key-method 2,tls-server'
Wed Apr 22 10:16:14 2020 us=210074 [31956] Local Options hash (VER=V4): 'ec542dd5'
Wed Apr 22 10:16:14 2020 us=210087 [31956] Expected Remote Options hash (VER=V4): '00bc425f'
Wed Apr 22 10:16:14 2020 us=210098 [31956] UDPv4 link local: [undef]
Wed Apr 22 10:16:14 2020 us=210107 [31956] UDPv4 link remote: [AF_INET]10.146.23.218:8443
Wed Apr 22 10:16:14 2020 us=210130 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:16:16 2020 us=460234 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:16:20 2020 us=957985 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:16:28 2020 us=968424 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:16:44 2020 us=729143 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:17:16 2020 us=330992 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:18:20 2020 us=293321 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.23.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:19:14 2020 us=324898 [31956] [UNDEF] Inactivity timeout (--ping-restart), restarting
Wed Apr 22 10:19:14 2020 us=325114 [31956] TCP/UDP: Closing socket
Wed Apr 22 10:19:14 2020 us=325172 [31956] SIGUSR1[soft,ping-restart] received, process restarting
Wed Apr 22 10:19:14 2020 us=325217 [31956] Restart pause, 10 second(s)

А иногда он идет на несколько шагов вперед, а затем выходит из строя:

Wed Apr 22 10:00:18 2020 us=961904 [31956] UDPv4 WRITE [14] to [AF_INET]10.146.7.218:8443: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 [ ] pid=0 DATA len=0
Wed Apr 22 10:00:22 2020 us=447412 [31956] UDPv4 READ [26] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_HARD_RESET_SERVER_V2 kid=0 [ 0 ] pid=0 DATA len=0
Wed Apr 22 10:00:22 2020 us=447487 [31956] TLS: Initial packet from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2), sid=99bdf93f 4d4f0c73
Wed Apr 22 10:00:22 2020 us=447606 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 0 ]
Wed Apr 22 10:00:22 2020 us=447813 [31956] UDPv4 WRITE [114] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=1 DATA len=100
Wed Apr 22 10:00:22 2020 us=447990 [31956] UDPv4 WRITE [114] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=2 DATA len=100
Wed Apr 22 10:00:22 2020 us=448131 [31956] UDPv4 WRITE [100] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=3 DATA len=86
Wed Apr 22 10:00:24 2020 us=789806 [31956] UDPv4 WRITE [114] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): 
...
...
Wed Apr 22 10:00:29 2020 us=952755 [31956] UDPv4 READ [126] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ 3 ] pid=1 DATA len=100
Wed Apr 22 10:00:29 2020 us=952860 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 1 ]
Wed Apr 22 10:00:29 2020 us=952978 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=2 DATA len=100
Wed Apr 22 10:00:29 2020 us=953016 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 2 ]
Wed Apr 22 10:00:29 2020 us=953074 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=3 DATA len=100
Wed Apr 22 10:00:29 2020 us=953107 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 3 ]
Wed Apr 22 10:00:29 2020 us=953168 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=4 DATA len=100
Wed Apr 22 10:00:29 2020 us=953201 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 4 ]
Wed Apr 22 10:00:30 2020 us=411565 [31956] UDPv4 READ [22] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 1 ]
Wed Apr 22 10:00:36 2020 us=566024 [31956] UDPv4 READ [126] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ 1 ] pid=1 DATA len=100
Wed Apr 22 10:00:36 2020 us=566119 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 1 ]
Wed Apr 22 10:00:36 2020 us=566243 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=2 DATA len=100
Wed Apr 22 10:00:36 2020 us=566302 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 2 ]
Wed Apr 22 10:00:36 2020 us=566396 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=3 DATA len=100
Wed Apr 22 10:00:36 2020 us=566450 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 3 ]
Wed Apr 22 10:00:36 2020 us=566657 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=4 DATA len=100
Wed Apr 22 10:00:36 2020 us=566769 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 4 ]
Wed Apr 22 10:00:38 2020 us=981036 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=5 DATA len=100
Wed Apr 22 10:00:38 2020 us=981102 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 5 ]
Wed Apr 22 10:00:38 2020 us=981167 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=6 DATA len=100
Wed Apr 22 10:00:38 2020 us=981204 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 6 ]
Wed Apr 22 10:00:38 2020 us=981286 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=7 DATA len=100
Wed Apr 22 10:00:38 2020 us=981328 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 7 ]
Wed Apr 22 10:00:38 2020 us=981371 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=8 DATA len=100
Wed Apr 22 10:00:38 2020 us=981406 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 8 ]
Wed Apr 22 10:00:49 2020 us=79299 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=6 DATA len=100
Wed Apr 22 10:00:49 2020 us=79459 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 6 ]
Wed Apr 22 10:00:49 2020 us=79750 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=7 DATA len=100
Wed Apr 22 10:00:49 2020 us=79874 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 7 ]
Wed Apr 22 10:00:49 2020 us=80081 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=8 DATA len=100
Wed Apr 22 10:00:49 2020 us=80191 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 8 ]
Wed Apr 22 10:00:49 2020 us=80388 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=9 DATA len=100
Wed Apr 22 10:00:49 2020 us=80507 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 9 ]
Wed Apr 22 10:00:49 2020 us=80636 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=10 DATA len=100
Wed Apr 22 10:00:49 2020 us=80717 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 10 ]
Wed Apr 22 10:00:49 2020 us=80884 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=11 DATA len=100
Wed Apr 22 10:00:49 2020 us=80977 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 11 ]
Wed Apr 22 10:00:49 2020 us=81130 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=12 DATA len=100
...
...
Wed Apr 22 10:00:59 2020 us=796622 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 15 ]
Wed Apr 22 10:00:59 2020 us=796741 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=16 DATA len=100
Wed Apr 22 10:00:59 2020 us=796788 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 16 ]
Wed Apr 22 10:00:59 2020 us=796885 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=17 DATA len=100
Wed Apr 22 10:00:59 2020 us=796933 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 17 ]
Wed Apr 22 10:00:59 2020 us=797016 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=18 DATA len=100
Wed Apr 22 10:00:59 2020 us=797061 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 18 ]
Wed Apr 22 10:00:59 2020 us=797139 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=19 DATA len=100
Wed Apr 22 10:00:59 2020 us=797172 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 19 ]
Wed Apr 22 10:00:59 2020 us=797271 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=20 DATA len=100
Wed Apr 22 10:00:59 2020 us=797313 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 20 ]
Wed Apr 22 10:01:08 2020 us=418632 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=17 DATA len=100
Wed Apr 22 10:01:08 2020 us=418683 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 17 ]
Wed Apr 22 10:01:08 2020 us=418754 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=18 DATA len=100
Wed Apr 22 10:01:08 2020 us=418794 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 18 ]
Wed Apr 22 10:01:08 2020 us=418848 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=19 DATA len=100
Wed Apr 22 10:01:08 2020 us=418876 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 19 ]
Wed Apr 22 10:01:08 2020 us=418929 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=20 DATA len=100
Wed Apr 22 10:01:08 2020 us=418960 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 20 ]
Wed Apr 22 10:01:08 2020 us=419048 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=21 DATA len=100
Wed Apr 22 10:01:08 2020 us=419097 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 21 ]
Wed Apr 22 10:01:08 2020 us=419170 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=22 DATA len=100
Wed Apr 22 10:01:08 2020 us=419220 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 22 ]
Wed Apr 22 10:01:08 2020 us=419298 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=23 DATA len=100
Wed Apr 22 10:01:08 2020 us=419348 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 23 ]
Wed Apr 22 10:01:08 2020 us=419416 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=24 DATA len=100
Wed Apr 22 10:01:08 2020 us=419449 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 24 ]
Wed Apr 22 10:01:16 2020 us=361894 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=21 DATA len=100
Wed Apr 22 10:01:16 2020 us=361993 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 21 ]
Wed Apr 22 10:01:16 2020 us=362261 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=22 DATA len=100
Wed Apr 22 10:01:16 2020 us=362341 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 22 ]
Wed Apr 22 10:01:16 2020 us=362585 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=23 DATA len=100
Wed Apr 22 10:01:16 2020 us=362643 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 23 ]
Wed Apr 22 10:01:16 2020 us=362855 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=24 DATA len=100
Wed Apr 22 10:01:16 2020 us=362910 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 24 ]
Wed Apr 22 10:01:16 2020 us=363146 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=25 DATA len=100
Wed Apr 22 10:01:16 2020 us=363213 [31956] UDPv4 WRITE [22] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 25 ]
Wed Apr 22 10:01:16 2020 us=363463 [31956] UDPv4 READ [114] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=26 DATA len=100
...
...
UDPv4 WRITE [114] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=10 DATA len=100
Wed Apr 22 10:02:10 2020 us=955007 [31956] UDPv4 READ [22] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 12 ]
Wed Apr 22 10:02:38 2020 us=998361 [31956] UDPv4 WRITE [114] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=9 DATA len=100
Wed Apr 22 10:02:40 2020 us=213582 [31956] UDPv4 WRITE [114] to [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_CONTROL_V1 kid=0 [ ] pid=10 DATA len=100
Wed Apr 22 10:02:46 2020 us=59600 [31956] UDPv4 READ [22] from [AF_INET]10.146.7.218:8443 (via [AF_INET]10.146.7.195%Port2): P_ACK_V1 kid=0 [ 10 ]
Wed Apr 22 10:03:24 2020 us=700713 [31956] TLS Error: TLS key negotiation failed to occur within 200 seconds (check your network connectivity)
Wed Apr 22 10:03:24 2020 us=700760 [31956] TLS Error: TLS handshake failed
Wed Apr 22 10:03:24 2020 us=700962 [31956] TCP/UDP: Closing socket
Wed Apr 22 10:03:24 2020 us=700992 [31956] SIGUSR1[soft,tls-error] received, process restarting
Wed Apr 22 10:03:24 2020 us=701025 [31956] Restart pause, 10 second(s)

openvpn scale

Недостаточно репутации для комментариев, поэтому пишу здесь: Вы это проверяли? Рукопожатие OpenVPN TLS зависает на P_CONTROL_HARD_RESET_SERVER_V2