我正在运行 Ubuntu 12.04 LTE。我第一次尝试通过以太网连接，但没有成功。
Ifconfig eth0 返回：
eth0 Link encap:Ethernet HWaddr: 00:01:2e:3f:f1:a0
inet6 addr: fe80::201:2eff:fe3f:f1a0 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:68 errors:0 dropped:0 overruns:0 frame:0
TX packets:183 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000
RX bytes:8374 (8.3 KB) TX bytes:42944 (42.9KB)
Interrupt:16 Base address:0x6c00
/etc/network/interfaces 有
auto lo
iface lo inef loopback
自动 eth0
iface eth0 inet dhcp
sudo /etc/init.d/networking 打印：
* Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
* Reconfiguring network interfaces...
Failed to bring up eth0
[OK]