Chapter 1. IPv6 Versus IPv4

IPv6 is sometimes called the Next Generation Internet Protocol, or IPng. Even though the Internet is seen as a relatively new technology, the protocols and technologies that make it work were developed in the 1970s and 1980s. The current Internet and all our corporate and private intranets use IPv4. Now, with IPv6, the first major upgrade of the Internet protocol suite is on the horizon or maybe even closer. Close enough, anyway, to start taking it seriously.