(because the mac changed)

…and the mac address in the eth0 config file at /etc/sysconfig/network-scripts/ifconfig-eth0 needs to match the mac address in the rules file at /etc/udev/rules.d/70-persistent-net.rules

The gist is…

You can edit the /etc/udev/rules.d/70-persistent-net.rules or you can delete the rules and Linux will configure it on the next boot.

Or bypass the whole issue and use the same mac address as the original vm…which shouldn’t be a problem behind different NAT firewalls(?)