GetIfEntry2 is a function primary available on Windows Vista, to suport this function other header files are necessary additionally to iphlpapi.h.
In code have commets from its source, as ReactOS and MSDN documentation.
I've removed your file due to the fact that you've copied the ReactOS source. This invalidates the changes for our license. It also invalidates you from submitting another patch for this file.
Your MinGW Community Administrators