Chapter 2. IPv6 Overview

This chapter covers the following subjects:

• IPv6 Addresses

• IPv6 Packet Header Format

• Extension Headers

• ICMPv6

• Neighbor Discovery Protocol

When the networks that eventually evolved into what we now call the Internet were first launched, they were the exclusive realm of academics and researchers. And when Vint Cerf and Bob Kahn invented TCP/IP for these networks, no one envisioned the Internet as it now is. At the time a 32-bit address space, yielding almost 4.3 billion addresses, seemed inexhaustible.

But as the kids who worked with these networks in college went out into the “real world,” they took with them an appreciation of the possibilities for what could be done with a peer-to-peer network built on open ...

Get Routing TCP/IP, Volume 1, 2/e now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.