采用JPcap来实现ipv6数据包的捕获和分析。由于JPcap提供的函数可以深入到数据链路层去捕获数据包，因此无论是IPv4数据包还是IPv6数据包都是被封装在以太帧头中，因此都能够被捕获。本程序利用JPcap提供的函数，实现了捕获并解析在纯IPv6环境或双协议栈环境下传输的IPv6数据包-JPcap used to achieve ipv6 packet capture and analysis. JPcap because of the function can provide depth to the data link layer to capture packets, so regardless of the packet are IPv4 or IPv6 data packets have been encapsulated in the Ethernet header, and therefore are able to be arrested. This procedure provided by the use of JPcap function, implementation of the capture and analysis in a pure IPv6 or dual stack environment environment IPv6 packet transmission