如果之前能够正常使用，某次开机或解锁后网络突然不能用了，尝试重新启动网络服务
相关报错：Failed to start LSB: Bring up/down networking.
Failed to start LSB: Bring up
/down
networking.
主机IP不可用
#如果没有执行权限可以直接进入su超级用户systemctl stop NetworkManager systemctl disable NetworkManager systemctl start network.service systemctl start network