Introduced by the IETF in 1992, IPv6 appears today to be a fundamental and well-engineered solution to the IPv4 addressing space shortage. IPv6 is significantly more efficient than IPv4 because its design is based on the past 20 years experience of the IPv4 protocol.

With IPv6, we have to change our thinking, because this protocol was not only designed for computers on networks such as the current IPv4 Internet. The applicability of IPv6 is global to communication devices such as cellular, wireless, phones, PDAs, television, radio, and so on rather than being limited to computers.

One main goal of IPv6 is to make the router the key element of any network by simplifying the deployment, operation, and management of any IP-based network. ...

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