linux 更换网卡起不来,VM下Ubuntu jeos更换网卡，网卡无法启动解决

原因是vm配置的网卡mac地址与，Ubuntu jeos安装是的配置缓存文件不同

使用 ifup eth0出现

eth0: ERROR while getting interface flags: No such device

SIOCSIFADDR: No such device

eth0: ERROR while getting interface flags: No such device

SIOCSIFNETMASK: No such device

SIOCSIFBRDADDR: No such device

eth0: ERROR while getting interface flags: No such device

eth0: ERROR while getting interface flags: No such device

Failed to bring up eth0.

删除缓存文件，重启后解决。

sudo rm /etc/udev/rules.d/70-persistent-net.rules