这是 ifconfig 的结果
eth1 Link encap:Ethernet HWaddr 08:2e:5f:86:46:c5
inet6 addr: fe80::a2e:5fff:fe86:46c5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:705 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:135540 (135.5 KB)
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:10118 errors:0 dropped:0 overruns:0 frame:0
TX packets:10118 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1131308 (1.1 MB) TX bytes:1131308 (1.1 MB)
wlan1 Link encap:Ethernet HWaddr 20:10:7a:24:7f:c4
inet addr:10.122.138.189 Bcast:10.122.143.255 Mask:255.255.240.0
inet6 addr: fe80::2210:7aff:fe24:7fc4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:13596 errors:0 dropped:1 overruns:0 frame:0
TX packets:14856 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7080753 (7.0 MB) TX bytes:2200503 (2.2 MB)
这是 /etc/network/interfaces 文件：
#interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
我尝试了 ubuntuforums 上的很多解决方案，但没有一个起作用。
请帮帮我