In order to migrate, treat PROXOMOX VM as physical machine and do P2V conversion. i.e. the same way we’d convert a physical host. Obtain a P2V iso image, connect it to the guest to be converted in PROXOMOX, and boot the guest under PROXOMOX using the P2V image. The P2V image runs the P2V client. [...]
Log in to the RHEV-M Admin Portal. Power off the virtual machine (VM). Select the Network Interface sub-tab for that VM and click “Edit”. Select “Custom MAC address” and change it to the desired value: 5.Update the networking configuration inside the guest with the new MAC address.