Ace the Cisco CCNA Exam 2026 – Network Your Way to Success!

The command used to configure an interface for Stateless Address Autoconfiguration (SLAAC) in IPv6 is indeed "ipv6 address autoconfig." This command enables the interface to automatically generate its own IPv6 address based on the prefix information advertised by local routers using Router Advertisement (RA) messages.

When SLAAC is configured, devices can create a unique IPv6 address by combining the network prefix received from the router with their own Interface Identifier (which is usually derived from the device's MAC address). This process allows for easy and automatic address configuration without the need for a DHCP server, hence maintaining a self-sufficient network environment.

The other commands listed pertain to different methods of addressing IPv6 interfaces. The command for DHCP would require an active DHCPv6 server, while the commands for manual and static addressing involve explicitly assigning an IPv6 address rather than allowing the interface to configure itself automatically using SLAAC. Understanding the difference between these methods is crucial for effective IPv6 network management.