解决虚拟机安装 Linux 移植到别处网卡起不来的问题-优快云博客

I've been doing some experiments with VMWare Server and Ubuntu Server. After copying a VM all the NICs from the new VM disappeared (kept getting "ERROR while getting interface flags: No such device" when I did ifup eth0. I found the solution here.

From http://ephemeralvalue.com/?p=23:

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Cloning Ubuntu Server 7.10 on VMware ESX

After cloning a virtual machine running Ubuntu Server 7.10 I found that it didn’t have any network available. Restarting networking gave:

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.

The problem lies in the fact that ethernet MAC addresses are cached. You need to remove a file to clear the cached value:

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

After a restart of your server you should have networking back again.

I also had to edit the following files to change the static ip addresses and hostname:

/etc/hosts - change ip address and hostnames
/etc/hostname - change hostname
/etc/network/interfaces - change ip address