给win7 系统添加一个Loopback Adapter

在机子上写代码测试socket经常遇到问题，为了观察socket通信就安装了个wireshark，可是wireshark不能监视loopback ，因为win7默认没有安装loopback adapter。

那就得添加一个:

The key step I was missing was how to find the Hardware Wizard:

1. Click the Start menu.
2. Search for “cmd".
3. Right-click on “cmd” and select “Run as Administrator”
4. Enter “hdwwiz.exe”

From that point on it's the same approach as under Vista, i.e.:

1. In the "Welcome to the Add Hardware Wizard", click Next.
2. Select "Install the hardware that I manually select from a list (Advanced)" and click Next.
3. Scroll down and select "Network adapters" and click Next.
4. Select under Manufacturer "Microsoft" and then under Network Adapter "Microsoft Loopback Adapter" and click Next.

I've tested this and it's working for me (connecting the host to a VPC using the loopback adapter).