捕获IP数据包的小程序,原理是使用PCAP库.开发语言为C-IP packet capture the small programs, principles for the use of Cards. For the C programming language

libnet是一个小型的接口函数库，主要用C语言写成，提供了低层网络数据包的构造、处理和发送功能。-The libnet Is a small interface library, mainly written in C language, the construction of low-level network packets, processing and transmission functions.