Eth0: ERROR while getting interface flags: No such device

Experiment with virtual machine, only one system is installed, the rest are copy, then modify the name of the network card, from ehh1 to eth0, but when the network card is opened < Br>

eth0: ERROR while getting interface flags: No such device

Problem Cause: The MAC address is cached, so the MAC configured by eth0 cannot be found, so No such device

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Method 1:

#ifconfig -a

There is no eth0 information at this time, but there is eth1

The solution is: put the name back Go back, also changed to eth1

Method 2: Delete the cache

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

But you need to restart the machine, restart is not working!