本文专门讲解如何运用这种原始套接字，来模拟I P的一些实用工具，比如Tr a c e r o u t e和P i n g程序等等。使用原始套接字，亦可对I P头信息进行实际的操作。-This article specifically on how to use this original socket, to simulate the IP number of practical tools, such as Tr aceroute and P ing procedures. Using ra