The Remote IP: is what another computer sees as your IP coming in to it. It just tells you back so you can use it if you need it. If the remote ip is the same as what your NAT is reporting, set the forced ip to it.
Someone could make a "rogue" client that returns a invalid or fake remote ip just to mess people up so don't depend on it totally, or only rely on it if it's valid from several different sources.