Is MAC address assigned permanently, or it could be changed? | FAQ | MAC Address Vendor Lookup
Frequently asked questions
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Is MAC address assigned permanently, or it could be changed?

Although it is intended to be a permanent and globally unique identification, one can change the MAC address on most modern hardware. Changing MAC addresses is necessary in network virtualization. It could also be used in the process of exploiting security vulnerabilities. This procedure is called MAC spoofing.

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