我使用的是 ubuntu 14.04，过去经常通过 openvpn 连接到 airvpn，一切运行都很顺畅。但现在我不得不买一个新的路由器，它是 EuroDocsiss 路由器，而且似乎 vpn 无法在此路由器后面工作。当我通过 openvpn 连接到终端时，一切运行正常，我得到“初始化序列已完成”，但当我尝试连接到任何站点时，什么都不起作用。有人对如何解决问题有什么建议吗？
我使用 VPN 来保护上网时的隐私，因此解决方案如下： OpenVPN 已连接但在 Ubuntu 14.04 / 16.04 上无法访问互联网 我想，不算数。
我还远不能熟练掌握 ubuntu 和类似的东西，所以请耐心等待 :)
谢谢您的帮助！
以下是一些可能有帮助的终端输出？！
这是没有 VPN 连接的情况：
sterome@Sterome:~$ ifconfig
eth0 Link encap:Ethernet HWaddr b8:88:e3:eb:38:c7
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:17605 errors:0 dropped:0 overruns:0 frame:0
TX packets:17605 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2395916 (2.3 MB) TX bytes:2395916 (2.3 MB)
wlan0 Link encap:Ethernet HWaddr 60:36:dd:c3:34:1c
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: 2a02:2450:103a:a6a:5c97:d6ce:4d4a:59e/64 Scope:Global
inet6 addr: 2a02:2450:103a:a6a:6236:ddff:fec3:341c/64 Scope:Global
inet6 addr: fe80::6236:ddff:fec3:341c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:715983 errors:0 dropped:0 overruns:0 frame:0
TX packets:394160 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:987194124 (987.1 MB) TX bytes:38882147 (38.8 MB)
sterome@Sterome:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 wlan0
192.168.0.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
sterome@Sterome:~$ ping -c3 airvpn.org
PING airvpn.org (5.196.64.52) 56(84) bytes of data.
64 bytes from ns334629.ip-5-196-64.eu (5.196.64.52): icmp_seq=1 ttl=51 time=34.1 ms
64 bytes from ns334629.ip-5-196-64.eu (5.196.64.52): icmp_seq=2 ttl=51 time=33.2 ms
64 bytes from ns334629.ip-5-196-64.eu (5.196.64.52): icmp_seq=3 ttl=51 time=39.3 ms
--- airvpn.org ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 33.242/35.559/39.318/2.686 ms
当 VPN 连接时，会发生以下情况：
sterome@Sterome:~$ ifconfig
eth0 Link encap:Ethernet HWaddr b8:88:e3:eb:38:c7
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:17661 errors:0 dropped:0 overruns:0 frame:0
TX packets:17661 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2404286 (2.4 MB) TX bytes:2404286 (2.4 MB)
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.4.22.129 P-t-P:10.4.22.129 Mask:255.255.0.0
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:3224 (3.2 KB)
wlan0 Link encap:Ethernet HWaddr 60:36:dd:c3:34:1c
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: 2a02:2450:103a:a6a:5c97:d6ce:4d4a:59e/64 Scope:Global
inet6 addr: 2a02:2450:103a:a6a:6236:ddff:fec3:341c/64 Scope:Global
inet6 addr: fe80::6236:ddff:fec3:341c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:716130 errors:0 dropped:0 overruns:0 frame:0
TX packets:394305 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:987220501 (987.2 MB) TX bytes:38906803 (38.9 MB)
sterome@Sterome:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.4.0.1 128.0.0.0 UG 0 0 0 tun0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 wlan0
10.4.0.0 0.0.0.0 255.255.0.0 U 0 0 0 tun0
62.102.148.143 192.168.0.1 255.255.255.255 UGH 0 0 0 wlan0
128.0.0.0 10.4.0.1 128.0.0.0 UG 0 0 0 tun0
192.168.0.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0
sterome@Sterome:~$ ping -c3 airvpn.org
ping: unknown host airvpn.org
答案1
检查是否可以通过 IP 地址（而不是规范名称） ping 某些服务，例如：
ping -c 3 8.8.8.8
如果可以，则问题出在您的 DNS 可访问性上。更改它的最简单方法是编辑 /etc/resolv.conf：
名称服务器 8.8.8.8
但是如果您希望每次连接到 VPN 时都执行此操作，请检查以下问题：https://serverfault.com/questions/318563/how-to-push-my-own-dns-server-to-openvpn