How is an EUI-64 format interface ID created from a 48-bit MAC address?

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How is an EUI-64 format interface ID created from a 48-bit MAC address?

  • by appending 0xFF to the MAC address
  • by prefixing the MAC address with 0xFFEE
  • by prefixing the MAC address with 0xFF and appending 0xFF to it
  • by inserting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address
  • by prefixing the MAC address with 0xF and inserting 0xF after each of its first three bytes

Explanation: The modified EUI-64 format interface identifier is derived from the 48-bit link-layer (MAC) address by inserting the hexadecimal number FFFE between the upper three bytes (OUI field) and the lower three bytes (serial number) of the link layer address.

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