Part II-4. INTERNET PROTOCOL VERSION 6 (IPV6)
Since 1981, TCP/IP has been built on version 4 of the Internet Protocol (IPv4), discussed at length in the preceding part. IPv4 was created when the giant, worldwide Internet we take for granted today was just a small, experimental network. Considering how much the Internet has grown and changed over the course of two decades, IPv4 has done its job admirably. At the same time, it has been apparent for many years that certain limitations in this venerable protocol would hold back the future growth of the Internet if they were not addressed.
Due to the key role that IP plays, changing it is no simple feat. It means a substantial modification to the way that nearly ...
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