- With CentOS 6 everthing is handled by udev now. Go into
/etc/udev/rules.d
and delete the70-persistent-net.rules
file and reboot. - Now you need to edit
/etc/sysconfig/network-scripts/ifcfg-eth0
and manually update to the MAC of your new NIC card.
Deleting the file forces the detection process to run again at boot with no baggage left over from the cloning process, namely the old NIC MAC address(es).
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