If your organization is gearing up for IPv6, this in-depth book provides the practical information and guidance you need to plan for, design, and implement this vastly improved protocol. Author Silvia Hagen takes system and network administrators, engineers, and network designers through the technical details of IPv6 features and functions, and provides options for those who need to integrate IPv6 with their current IPv4 infrastructure. The flood of Internet-enabled devices has made migrating to IPv6 a paramount concern worldwide. In this updated edition, Hagen distills more than ten years of studying, working with, and consulting with enterprises on IPv6. It’s the only book of its kind. IPv6 Essentials
A distillation of the RFCs related to IPv6. Very focused on the bits and where they go which is useful when programming in the network stack, but doesn't help much when writing application level IPv6 enabled code.
Gives decent overview of IPv6 administration options but as the book doesn't focus on any single OS it can't give details on how to implement them.
Lacks the information one would need in working with IPv6 but it does cover the science behind it quite well. One of the more difficult computer reads that I have come across. Not recommended but as a once a year if that reference.