问题描述：
通过下述指令查看网卡状态为 "unmanaged"
nmcli dev status解决方法：
cd /usr/lib/NetworkManager/conf.d/
sudo mv 10-globally-managed-devices.conf 10-globally-managed-devices.conf.bak
sudo cp 10-globally-managed-devices.conf.bak 10-globally-managed-devices.conf
sudo sed -i '/unmanaged-devices/s/$/&,except:type:ethernet/' 10-globally-managed-devices.conf
sudo systemctl restart NetworkManager
