An old license manager for a CAD tool requires a hardware-locked MAC address and an IP of 192.168.0.99. You can assign both to a loopback adapter. You cannot do this with 127.0.0.1 .
You are a casual user or gamer. The loopback adapter adds complexity without benefit for everyday tasks like web browsing or gaming. microsoft loopback adapter windows 11
One of the most powerful features is the ability to install loopback adapters on a single Windows 11 machine. This is useful for simulating complex networks. An old license manager for a CAD tool