As with IPv4, an IPv6 address serves as an identifier for an interface or group of interfaces. Also like IPv4, IPv6 addresses come in several types, based on how they represent those interfaces. IPv6 has three types of addresses. This post covers all three, plus some special purpose addresses as well.

Introducing IPv6 | Classifying IPv6 Addresses is a post from don't panic – One Network Architect's View of Life, the Internet, and Everything.