ubuntu 有线连接无法访问网络

问题:连上网线后,有ip,但是无法访问外网。

我的解决方案是:

复制代码
1.通过命令行ifconfig命令查看以太网(即网线插口)的名称,如下图,'enp3s0’是网线插口(Ethernet以太网):

zhuml@zhuml-Latitude-3350:~$ ifconfig
enp3s0 Link encap:Ethernet HWaddr 14:18:77:a5:24:3d
inet addr:10.58.101.247 Bcast:10.58.103.255 Mask:255.255.252.0
inet6 addr: fe80::2883:9232:3f1e:fe3/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:13212 errors:0 dropped:0 overruns:0 frame:0
TX packets:1696 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3760852 (3.7 MB) TX bytes:238743 (238.7 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:558 errors:0 dropped:0 overruns:0 frame:0
TX packets:558 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:72352 (72.3 KB) TX bytes:72352 (72.3 KB)

wlp4s0 Link encap:Ethernet HWaddr a4:02:b9:0a:76:b1
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)
2.命令行添加或修改网络参数
zhuml@zhuml-Latitude-3350:~$ sudo gedit /etc/network/interfaces
弹出一个文本窗,如下:
#interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
在里面添加以太网的相关信息
#interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto esp3s0
iface esp3s0 inet dhcp

3.重启网络
zhuml@zhuml-Latitude-3350:~$ sudo /etc/init.d/networking restart
现在应该能够恢复插上网线,能够上网;

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