I don't think using non-asigned OUI is good, but MAC addresses with second bit 1 are called "locally administered addresses" and can be used ... ... <看更多>

Jan 16, 2016 - Enter the MAC address or OUI and find which company made the device. ... <看更多>

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NOTE – A very small number of assignments made prior to adoption of IEEE 802 standards have the X bit equal to one (BlockID assignments). ... <看更多>