>>
>>According to the GetAdaptersInfo documentation:
>>
>>In versions prior to Windows 10, the order in which adapters appear in the list returned by this function can be controlled from the Network Connections folder: select the Advanced Settings menu item from the Advanced menu. Starting with Windows 10, the order is unspecified.
>>
>>Is the system returning the address for a different NIC?
>
>I don't know. I'll check if the PC is running windows 10 and if there are multiple NIC s tomorrow

Don't forget to look for wireless adapters, also.