====== Ubuntu - Networking - IPv6 - Unicast, anycast, multicast ======

IPv6 packets can be sent, depending on the intended purpose, in a variety of ways:

  * **unicast**:  used for 1-to-1 communication; it sends the packet to a specific node.
    * Certain unicast addresses within the IPv6 address space are reserved.
  * **anycast**:  used for 1-to-1-of-many communication;
    * it sends the packet to multiple nodes but only intended to the closest on its route.
  * **multicast**:  used for 1-to-many communication; it sends the packet to multiple nodes.

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[[Ubuntu:Networking:IPv6:Unicast, anycast, multicast:IPv6 multicast|IPv6 multicast]]