我刚刚升级到 18.04 LTS，即使连接到无线，互联网似乎也无法正常工作。我知道已经有几个关于同一主题的问题，但我找不到任何适合我的解决方案。
尝试 ping google.com，我得到ping: google.com: Name or service not known
我是网络新手，但我运行了以下命令来提供更多信息：
ifconfig：
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:90:5b:8d:8e txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 00:21:cc:c0:da:4d txqueuelen 1000 (Ethernet)
RX packets 6402 bytes 409728 (409.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 430 bytes 64072 (64.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xf2500000-f2520000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback)
RX packets 8237 bytes 592857 (592.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8237 bytes 592857 (592.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.100.2 netmask 255.255.255.0 broadcast 192.168.100.255
inet6 fe80::f121:abd2:7fe2:ef4a prefixlen 64 scopeid 0x20<link>
inet6 2a02:2f05:6205:d800:4d08:65a1:e15a:b5b4 prefixlen 64 scopeid 0x0<global>
inet6 2a02:2f05:6205:d800:915e:95fb:ee10:4db6 prefixlen 64 scopeid 0x0<global>
ether 8c:70:5a:64:88:2c txqueuelen 1000 (Ethernet)
RX packets 2313 bytes 2279322 (2.2 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1362 bytes 274783 (274.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ip a:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:21:cc:c0:da:4d brd ff:ff:ff:ff:ff:ff
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 8c:70:5a:64:88:2c brd ff:ff:ff:ff:ff:ff
inet 192.168.100.2/24 brd 192.168.100.255 scope global dynamic noprefixroute wlp3s0
valid_lft 258163sec preferred_lft 258163sec
inet6 2a02:2f05:6205:d800:4d08:65a1:e15a:b5b4/64 scope global temporary dynamic
valid_lft 603766sec preferred_lft 85231sec
inet6 2a02:2f05:6205:d800:915e:95fb:ee10:4db6/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::f121:abd2:7fe2:ef4a/64 scope link noprefixroute
valid_lft forever preferred_lft forever
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:90:5b:8d:8e brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
答案1
通过添加以下几行来使其正常工作/etc/resolv.conf：
nameserver 8.8.8.8
nameserver 8.8.4.4