Unicast is communication between a single sender and a single receiver over a network. The term
exists in contradistinction to multicast,
communication between a single sender and multiple receivers, and anycast,
communication between any sender and the nearest of a group of receivers in a network. An earlier
term, point-to-point communication, is similar in meaning to unicast. The new Internet
Protocol version 6 (IPv6)
supports unicast as well as anycast and multicast.
This was last updated in February 1998
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