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After copying the virtual hard disk of a vm I made to a new machine, ubuntu no longer recognises the network cards and spews out errors like:

failed to bring up eth0 ..... no such device

I'm guessing that this is to do with the change in MAC address (since the type of network card has remained the same). Does anyone know how to fix this?

EDIT: ifconfig only shows the loopback interface, no others.

EDIT 2: ip addr shows they've moved to eth2 and eth3???

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up vote 3 down vote accepted

Deleting the contents of the file /etc/udev/rules.d/70-persistent-net.rules and rebooting did the trick :)

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