Usually it shows your aTV - the one with the manually rerouted DNS. If you don't know this IP... I guess someone else is using your computer as DNS Server then?
Interesting... Where does it come from? Keep me posted :-D
As a temporary solution for anyone having this issue, replacing the function with your local IP address will solve the problem! It may be working after commit 91.. Haven't tried, sticking with modified commit 90.
The code is on line 23 of the PlexConnect.py file.... Replace socket.gethostbyname(socket.getfqdn()) with your IP.... Example: