OpenVPN соединяется и сразу отсоединяется, и так по кругу

Проверял на серверах Германии (UDP/TCP) и Нидерландов (UDP).

Пример лога:

```
> sudo openvpn /etc/openvpn/Netherlands_freeopenvpn_udp.ovpn
2023-08-08 19:23:13 DEPRECATED OPTION: --max-routes option ignored.The number of routes is unlimited as of OpenVPN 2.4. This option will be removed in a future version, please remove it from your configuration.
2023-08-08 19:23:13 Note: --cipher is not set. OpenVPN versions before 2.5 defaulted to BF-CBC as fallback when cipher negotiation failed in this case. If you need this fallback please add '--data-ciphers-fallback BF-CBC' to your configuration and/or add BF-CBC to --data-ciphers.
2023-08-08 19:23:13 WARNING: file '/etc/openvpn/credentials.txt' is group or others accessible
2023-08-08 19:23:13 OpenVPN 2.6.5 [git:makepkg/cbc9e0ce412e7b42+] x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] [DCO] built on Jun 13 2023
2023-08-08 19:23:13 library versions: OpenSSL 3.1.2 1 Aug 2023, LZO 2.10
2023-08-08 19:23:13 DCO version: N/A
2023-08-08 19:23:14 TCP/UDP: Preserving recently used remote address: [AF_INET]5.255.88.7:19697
2023-08-08 19:23:14 UDPv4 link local: (not bound)
2023-08-08 19:23:14 UDPv4 link remote: [AF_INET]5.255.88.7:19697
2023-08-08 19:23:14 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
2023-08-08 19:23:14 VERIFY OK: depth=1, O=5e11c9e4c47b2167519e9ef6, CN=5e11c9e4c47b2167519e9f03
2023-08-08 19:23:14 NOTE: --mute triggered...
2023-08-08 19:23:14 6 variation(s) on previous 3 message(s) suppressed by --mute
2023-08-08 19:23:14 [5e11c9e6c47b2167519e9f0f] Peer Connection Initiated with [AF_INET]5.255.88.7:19697
2023-08-08 19:23:20 TUN/TAP device tun0 opened
2023-08-08 19:23:20 net_iface_mtu_set: mtu 1500 for tun0
2023-08-08 19:23:20 net_iface_up: set tun0 up
2023-08-08 19:23:20 net_addr_v4_add: 192.168.242.226/24 dev tun0
2023-08-08 19:23:20 Initialization Sequence Completed
2023-08-08 19:23:20 Data Channel: cipher 'AES-128-CBC', auth 'SHA1', compression: 'stub'
2023-08-08 19:23:20 NOTE: --mute triggered...
2023-08-08 19:24:20 1 variation(s) on previous 3 message(s) suppressed by --mute
2023-08-08 19:24:20 [5e11c9e6c47b2167519e9f0f] Inactivity timeout (--ping-restart), restarting
2023-08-08 19:24:20 SIGUSR1[soft,ping-restart] received, process restarting
2023-08-08 19:24:21 TCP/UDP: Preserving recently used remote address: [AF_INET]5.255.88.7:19697
2023-08-08 19:24:21 UDPv4 link local: (not bound)
2023-08-08 19:24:21 UDPv4 link remote: [AF_INET]5.255.88.7:19697
2023-08-08 19:24:23 VERIFY OK: depth=1, O=5e11c9e4c47b2167519e9ef6, CN=5e11c9e4c47b2167519e9f03
2023-08-08 19:24:23 NOTE: --mute triggered...
2023-08-08 19:24:23 6 variation(s) on previous 3 message(s) suppressed by --mute
2023-08-08 19:24:23 [5e11c9e6c47b2167519e9f0f] Peer Connection Initiated with [AF_INET]5.255.88.7:19697
2023-08-08 19:24:29 Preserving previous TUN/TAP instance: tun0
2023-08-08 19:24:29 Initialization Sequence Completed
2023-08-08 19:24:29 Data Channel: cipher 'AES-128-CBC', auth 'SHA1', compression: 'stub'
2023-08-08 19:24:29 NOTE: --mute triggered...
^C2023-08-08 19:25:09 1 variation(s) on previous 3 message(s) suppressed by --mute
2023-08-08 19:25:09 event_wait : Interrupted system call (fd=-1,code=4)
2023-08-08 19:25:09 Closing TUN/TAP interface
2023-08-08 19:25:09 net_addr_v4_del: 192.168.242.226 dev tun0
2023-08-08 19:25:09 SIGINT[hard,] received, process exiting
```