Technically, MACs are just identifiers—no “illegal” ones. But!
Manufacturers buy blocks of MACs, so if you use one that’s not yours, it *could* cause conflicts.
Fun fact: The second-least-significant bit in the first byte tells you if it’s locally administered. Nerd stuff, but useful.
IEEE’s OUI database is where you can check legit MAC ranges.
Manufacturers buy blocks of MACs, so if you use one that’s not yours, it *could* cause conflicts.
Fun fact: The second-least-significant bit in the first byte tells you if it’s locally administered. Nerd stuff, but useful.
IEEE’s OUI database is where you can check legit MAC ranges.