把网卡设为混杂模式的sniffer 的小例子， vc6.0 ， win2000下运行通过， 不用设备驱动程序 只能接受ip包，无法接收与ip包同级的其它网络包，如arp等 listview显示-put mixed mode sniffers small examples, vc6.0, WIN2000 running through without device drivers can only receive ip packet, can not receive the same level