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I am working on cloning an Ubuntu 18.04.2 physical server, I use clonezilla for cloning, however, when I apply that image to any other servers (and of course I change the hostname and static IPs), I find that the MAC addresses stay the same, which causes a mess in my network.

It seems the MAC addresses are hardcoded somewhere, do you have any idea where I can reset these MAC addresses to use the real ones of the other servers?

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This has been resolved by deleting the /etc/machine-id file and rebooting or just using the systemd-machine-id-setup utility.

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