COMPUTER NETWORKING

Detailed explanation-1: -An IPv6 multicast address defines a group of devices known as a multicast group. IPv6 multicast addresses use the prefix ff00::/8, shown in Table 4-10, which is equivalent to the IPv4 multicast address 224.0. 0.0/4. A packet sent to a multicast group always has a unicast source address.

Detailed explanation-2: -Multicast is a technique in which a device sends a single packet to multiple destinations simultaneously (one-to-many), in contrast to a unicast address, which sends a single packet to a single destination (one-to-one).

Detailed explanation-3: -In IPv6, multicast addresses serve the same purpose as broadcasts do in IPv4. The difference between IPv6 anycast and multicast is that packets sent to an anycast IPv6 address are delivered to one of several interfaces, while packets sent to a multicast IPv6 address are delivered to all of many interfaces.