原因是vm配置的網卡mac地址與，Ubuntu jeos安裝是的配置緩存文件不同
使用 ifup eth0出現
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.
刪除緩存文件，重啟後解決。
sudo rm /etc/udev/rules.d/70-persistent-net.rules
