本书从介绍IPv4中问题的产生和现状入手，详细阐述了IPv6的各个方面，包括IPv6的寻址结构、扩展头、身份验证和安全性、对任意点播和组播的支持以及对相关协议的影响，同时还探讨了IPv4向IPv6过渡的策略和应用。 本书内容由浅入深、语言精练易懂，为有经验的网络管理员和研究人员适应IP升级变化提供了关于IPv6清楚而又与众不同的介绍。

-IPv4 book from the introduction of problems and the status quo approach, described in detail various aspects of IPv6, including IPv6 addressing structure, the expansion of the first, authentication and security, for any on-demand and multicast support, as well as the relevant agreement impact, but also of IPv4 to IPv6 transition strategies and applications. Easy-to-digest the contents of this book, concise and understandable language, in order to have experience of network administrators and researchers to adapt to changes in IP upgrade on IPv6 to provide a clear and distinctive introduction.