What is the role of Router Advertisements in IPv6 SLAAC?

• A. They encrypt IPv6 traffic
• B. They assign IPv6 addresses from a DHCP server
• C. They provide DNS records
• D. They advertise network prefixes and enable autoconfigured addresses

Answer: (D)

Router Advertisements on IPv6 networks announce the presence of a router and the network’s prefix information, which enables devices to configure themselves automatically. When a host receives an advertisement that includes the network prefix and its length, it can form a global IPv6 address by combining that prefix with its own interface identifier. The advertisement also informs the host of the default route to reach networks beyond the local link. This combination of prefix availability and routing guidance is the essence of SLAAC, letting devices autoconfigure addresses without needing a DHCP server. Encryption and DNS provisioning are separate concerns and not the primary role of Router Advertisements in SLAAC.