A MAC (Media Access Control) address is a unique identifier assigned to network interfaces. The first 6 characters (3 bytes) identify the manufacturer (OUI - Organizationally Unique Identifier).

Formats accepted:

• 00:1A:2B:3C:4D:5E (colon-separated)
• 00-1A-2B-3C-4D-5E (dash-separated)
• 001A2B3C4D5E (no separator)
• 001A.2B3C.4D5E (Cisco format)