Stateless Address Autoconfiguration (SLAAC) is an IPv6 mechanism that allows devices to configure their own IP addresses without requiring a DHCP server. It uses Router Advertisements (RA) sent by routers to communicate essential network configuration information like prefixes, subnet masks, and default gateways.

• Router Discovery: Hosts discover routers and network configurations.

• Prefix Discovery: Hosts learn network prefixes to configure their own IPv6 addresses.

• Neighbor Discovery: Nodes discover the link-layer (MAC) address of other devices on the local network.

• Duplicate Address Detection (DAD): Ensures that no two devices use the same…

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Neighbor Discovery Protocol (NDP) is a key component of IPv6, performing several essential functions that replace and extend functionalities of IPv4’s ARP (Address Resolution Protocol), ICMP, and Router Discovery. NDP uses ICMPv6 (Internet Control Message Protocol for IPv6) messages to manage interactions between IPv6 devices on the same link or network.

Securing IPv6 Router Advertisements (RA) is important to protect the network from various attacks, such as rogue RAs or neighbor discovery attacks. These attacks can mislead hosts into accepting incorrect routing information, disrupt network connectivity, or even lead to a man-in-the-middle attack.