This book is, and we hope always will be, a work in progress. It is intended for people who plan, deploy, maintain and operate computer networks using Internet Protocol version 6 (IPv6). It is being written and updated by exactly such people. IPv6 is a mature protocol but every day we gain more experience, products are updated, and quite often the underlying technical standards are updated too. Therefore, this book will likewise be constantly updated. It's issued under an open source license. You are welcome to make a printed copy at your own expense, but be aware that the book will evolve constantly.
The list of contents should act as an on-line guide to the topics covered. Most readers will probably not read from cover to cover. Design your own path through the book.
There is also an index.
A little tip if you are reading this on GitHub: For some reason, GitHub doesn't support automatically opening a link in a new browser tab or window, so clicking on links will always take you away from the current page. To avoid this, with most browsers you can use CTRL+click (on Windows and Linux) or CMD+click (on MacOS) to open a new tab.