ARP模拟程序：本程序分为两个子程序，分别是arpsrc ,arptarget ；arpsrc用来模拟一台主机用来发送一个ARP的询问包，arptarget用来模拟接受ARP包的主机，对不同的ARP询问包进行处理。-ARP simulation program: This program is divided into two subroutines, namely arpsrc, arptarget arpsrc used to simulate a host to send an ARP