Assigning a Global Unicast IPv6 Address | Interface Configuration

C

IPv6 offers several options for assigning addresses to interfaces, including stateless and stateful address autoconfiguration, manual configuration, and DHCPv6. One option is to derive a global unicast IPv6 address from the interface's MAC address using the Extended Unique Identifier-64 (EUI-64) process.

The EUI-64 process involves inserting a fixed hexadecimal value of "FFFE" into the middle of the interface's MAC address and inverting the seventh bit. The resulting 64-bit value is then combined with the IPv6 prefix to form the interface's IPv6 address.

To answer the question, the correct action to assign a global unicast IPv6 address on an interface that is derived from the MAC address of that interface is to disable the EUI-64 bit process, which is option B. Disabling the EUI-64 bit process prevents the automatic generation of the interface ID and requires the manual configuration of the entire IPv6 address.

Alternatively, the other options are not applicable to assigning a global unicast IPv6 address on an interface that is derived from the MAC address of that interface:

• Explicitly assigning a link-local address (option A) is not required for assigning a global unicast IPv6 address, but it is necessary to ensure that the interface can communicate with other devices on the same link.
• Enabling SLAAC (option C) can be used to automatically configure an interface's IPv6 address, but it uses the EUI-64 process by default, which is not desired in this scenario.
• Configuring a stateful DHCPv6 server on the network (option D) is not necessary for assigning a global unicast IPv6 address, but it can be used to provide additional configuration options to clients, such as DNS server addresses or network-specific parameters. However, it does not affect the process of deriving the interface ID from the MAC address.