clone ubuntu 启动不能启动网卡

　　症状：

　　sudo /etc/init.d/networking restart

　　* Reconfiguring network interfaces...

　　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.

　　解决办法：

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