17 of 18 people found the following review helpful
Excellent discussion of IPv6 protocols,
This review is from: IPv6 Essentials (Paperback)
I read and reviewed "IPv6 Network Administration" (INA) in August 2005 and "Running IPv6" (RI) in January 2006. I gave those books 5 stars, so I had high expectations for "IPv6 Essentials, 2nd Ed" (IE2E). INA and RI are very hands-on, implementation-specific books. IE2E is more concerned with explaining protocols and IPv6 features. In this respect, IE2E is the perfect complement to INA and RI.
Silvia Hagen is clearly an IPv6 fan. I was initially skeptical about IPv6 adoption after reading comments by Daniel J. Bernstein and Renesys' Todd Underwood. I still have concerns, but reading case studies in Ch 10 of actual IPv6 deployments helped me understand the author's enthusiasm. Sylvia is less critical of IPv6 than INA and RI, which share recommendations for real-world usage. I still have serious concerns with security vulnerabilities in autoconfiguration (one of the major "cost savers" of IPv6) and IPSec key management (the other major "improvement" in IPv6, basically requiring PKI). I also believe the emphasis on "end-node protection" (security models, pp 122-3) at the expense of network-level protection is insufficient. Transitioning to IPv6 is also not as easy as IE2E implies, especially for multihomed sites with provider independent address space. (SHIM6 might not be sufficient or workable, and IPv6 doesn't have PIAS.)
The strongest aspect of IE2E is the thorough coverage of IPv6 protocols. Plenty of people like to point to very old TCP/IP books as "the Bibles" of networking, but the world has changed during the last decade. IE2E offers a very strong chapter on Mobile IPv6 and explains how that version is superior to IPv4 (mainly due to Route Optimization). Sylvia's SSH port forwarding trick (p 277) was obvious but something I hadn't considered previously -- very cool. IE2E manages to keep a readable size of around 400 pages by citing plenty of RFCs and drafts, which is smart given the state of the protocols. The book is also very up-to-date and technically accurate, as far as I could tell. I had a minor problem with the author's perceptions of threats and vulnerabilities at the start of the security chapter. She uses the former term but means the latter term.
If you want implementation details, such as commands to run and techniques to try, I recommend INA or RI. If you want to really understand IPv6, I recommend IE2E. Since you should ideally want both sets of skills, you should have at least two IPv6 books on your desk.
Postscript: I suggest the third edition offer the set of network traces featured in IE2E for download, so readers can look at them individually.