Once the packet leaves the router, it does not carry the machine’s MAC address. MAC address is only relevant till the router level. MAC address is hardcoded in the network interface card which means it’s unique and every device has a different MAC address. Unlike your IP address, which changes every time you connect to the internet, the MAC address remains the same. This MAC address (short for Media Access list) looks like “F8-28-19-4E-95-61”. In simple terms, every electronic device which connects to a network has a unique identifier called MAC address or Physical Address. So what is the “MAC address” and how can you find it?
