What method should a systems administrator use to convert a MAC address for IPv6 addressing?

The method used to convert a MAC address for IPv6 addressing is EUI-64. The EUI-64 format allows a system to generate a unique IPv6 address based on the device's MAC address. This process involves taking a 48-bit MAC address and expanding it into a 64-bit identifier by inserting specific bits in a standardized way, thus enabling the creation of a link-local address that can be used within an IPv6 network.

The EUI-64 format guarantees that the address remains unique to the interface, as it utilizes the existing MAC address, which is assigned to each network adapter. This method not only aids in seamless integration into IPv6 networks but also helps in maintaining global uniqueness without requiring additional configuration.

Other methods, such as subnetting, are related to dividing IP networks into smaller, manageable sub-networks but do not pertain to converting MAC addresses for IPv6. Hexadecimal conversion, while important in understanding IP address formats, does not directly address the transformation from MAC to IPv6. Access list configuration is entirely unrelated, as it deals with setting rules for network traffic rather than converting address formats.