Is it possible to change the physical address of a network interface card?

Linux

Yes, it is possible to change the physical address (MAC address) of a network interface card (NIC) through software, though this is often temporary and may revert after a reboot. Most operating systems provide utilities or commands (like ifconfig on Linux or netsh on Windows) to accomplish this. However, changing the MAC address can lead to network issues or conflicts if not done properly, and in some cases, it may violate network policies.