One of those basic things that Microsoft changed for us, when logged into a Windows 7 or Server 2008 R2 server and you ping itself you get a IP6 address. Few shops have converted to IP6 yet so this is how you change that address back to IP4. I do this in my Windows Templates in VMware.
- Open RegEdit, navigate to
DisabledComponentsDWORD registry value, set its value to 20 (Hexadecimal).
See Microsoft KB 929852 for more info.