IPv6过渡技术研究

随着当前互联网的飞速发展，当前使用的基于IPv4网络协议下的地址数显得越来越匮乏，因此IETF提出用IPv6协议取代IPv4协议。IPv6具有诸如海量地址、组播、邻居发现、自动配置等许多新特性。然而，怎样实现IPv4向IPv6的平滑过渡，以及怎样在现有IPv4网络上进行IPv6组网仍然是目前有待解决的问题。本文对目前常用的三种过渡技术双协议栈、隧道和地址翻译机制进行分析比较。

Research of IPv6 Transition Technology

With the currently rapid development of the Internet, there appears a growing tendency that the use of addresses based on the IPv4 network protocol is becoming scarcer, so the IETF （Internet Engineering Task Force） proposed to replace IPv4 with IPv6 protocol. IPv6 has such new features as mass addresses, multicast, neighbors discovery and auto configuration. However, how to achieve the smooth transition from IPv4 to IPv6 and how to construct IPv6 network based on IPv4 network remain a problem. This thesis analyzes and compares the three commonly used methods of transition： double-stack technology, tunnel technology and address translation.