我在我的 ubuntu 20.04 vps 上成功创建了 Pritunl Server。然后，当我尝试使用 openvpn 连接到它时，每次都会收到一条日志消息...
日志是：
Sun Nov 28 18:58:55 2021 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Sun Nov 28 18:58:55 2021 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Sun Nov 28 18:58:55 2021 TCP/UDP: Preserving recently used remote address: [AF_INET]95.216.249.231:16528
Sun Nov 28 18:58:55 2021 UDP link local: (not bound)
Sun Nov 28 18:58:55 2021 UDP link remote: [AF_INET]95.216.249.231:16528
Sun Nov 28 18:58:59 2021 Server poll timeout, restarting
Sun Nov 28 18:58:59 2021 SIGUSR1[soft,server_poll] received, process restarting
但是当我使用单独的代理时，它连接到 vpn 并且可以正常工作......有什么问题？