Ubuntu 16.04 中的未知接口

Ubuntu 16.04 中的未知接口

我想按照一些建议通过关闭然后打开来刷新网络接口以获取 DNS 更新。我使用以下方式列出了设备中的接口:ifconfig -a。我有 3 个接口,我关心的是有线接口。输出为(用 xx 省略硬件地址):

x@x-device:~$ ifconfig
enp0s31f6 Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          inet addr:172.17.72.13  Bcast:172.17.79.255  Mask:255.255.240.0
          inet6 addr: xxxx::xxxx:xxxx:xxxx:xxxx/xx Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:61239 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55609 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:26493098 (26.4 MB)  TX bytes:7035908 (7.0 MB)
          Interrupt:16 Memory:ef200000-ef220000 

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:1558 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1558 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:138063 (138.0 KB)  TX bytes:138063 (138.0 KB)

wlp2s0    Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          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)

然后我运行命令:

sudo ifdown enp0s31f6 && sudo ifup enp0s31f6

但输出:

Unknown interface enp0s31f6

问题是什么?

答案1

你可以试试:

 ip link set up dev enp0s31f6

然后运行 ​​dhcp-client 或手动设置 IP

man ip

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