我正在尝试设置一个VPN，它不会连接。 我正在使用的Ubuntu 15.04，我有我的错误文件发布如下：
Jun 17 15:05:54 ultron-MS-7641 nm-openvpn[15674]: UDPv4 link local: [undef] Jun 17 15:05:54 ultron-MS-7641 nm-openvpn[15674]: UDPv4 link remote: [AF_INET]192.168.1.6:1194 Jun 17 15:06:33 ultron-MS-7641 NetworkManager[650]: <warn> VPN connection 'client' connect timeout exceeded. Jun 17 15:06:33 ultron-MS-7641 NetworkManager[650]: nm-openvpn-Message: Terminated openvpn daemon with PID 15674. Jun 17 15:06:33 ultron-MS-7641 nm-openvpn[15674]: SIGTERM[hard,] received, process exiting Jun 17 15:06:53 ultron-MS-7641 NetworkManager[650]: <info> VPN service 'openvpn' disappeared