公司机器安装双网卡，需要来回切换内网和外网，写了两个小工具，利用系统内部指令，切换使用双网卡,Companies to install dual-card machines need to switch back and forth within the network and outside the network, wrote the two small tools, the use of system commands, switch using a dual network card

快书设置与切换网卡IP与MAC工具,特别是能设置网卡的MAC值-network tools

bat写的网卡切换程序，可以一键选择需要启用的网卡，自动禁止不用的网卡，非常方便-Bat write card switching procedures, can be key selection need to enable the card, automatic ban without card, very convenient

C#组播实现源码，可以多个网卡选择和切换(C# multicast implementation source code, can select and switch multiple network cards)