Ubuntu18.04虚拟机网卡掉了

前言

最近在使用Ubuntu虚拟机时突然发现无法链接互联网，查看之下原来是网卡掉了，因此记录下恢复步骤。

恢复步骤

系统版本 Ubuntu 18.04

恢复前

root@fuzz-iot-ubuntu18-04:/home/fuzz# 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:c9:a9:65:59  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

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 165559  bytes 13414800 (13.4 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 165559  bytes 13414800 (13.4 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

操作

sudo service network-manager stop
sudo rm /var/lib/NetworkManager/NetworkManager.state 
sudo service network-manager start

操作后网卡上线