Clearing the Machine ID of a Cloned Instance for DHCP

Photon OS uses the contents of /etc/machine-id to determine the DHCP unique identifier (duid) that is used for DHCP requests. If you use a Photon OS instance as the base system for cloning, to create additional Photon OS instances, you must clear the machine-id with this command:

echo -n > /etc/machine-id

When the value is cleared, systemd regenerates the machine-id and all DHCP requests will contain a unique duid.