IPv6 addresses are 128 bits long and, like IPv4, use three types of addresses, but they are not the same three types. IPv6 uses the following basic address types:
Unicast— A unique address is assigned to a network interface, which communicates with a single host on the network.
Multicast— A unique address is assigned to a group of systems. A message is sent from one host to all hosts that have the address assigned.
Anycast— A unique address is assigned to a group of systems, but a message sent from one host is delivered to only the nearest host that has the address assigned, unlike the multicast address type, in which all hosts that have the address receive the message.
IPv6 does not use the broadcast address type as IPv4 does. ...