Types of IPv6 addresses

Unicast - represents a single interface. Packets addressed to a unicast address are sent to a single interface.

Anycast - identifies one or more interfaces. For example, servers that support the same function can use the same unicast IP address. Packets sent to this IP address will be forwarded to the next server. Anycast addresses are used for load balancing. Known as "nearest address".

Multicast - represents a dynamic group of hosts. Packets sent to this address are delivered to many interfaces. Multicast addresses in IPv6 have the same purpose as their counterparts in IPv4.