This is a little strange. With Parallels 11 running, even without a VM loaded, in Apple's Server app, under Open Directory, the server is listed with 3 IP addresses. The correct one and 10.211.55.2, 10.37.129.2. The server is running as an OD replica. If I shut down Parallels and restart Server, it lists only the single correct address. It doesn't seem to be breaking anything but I'm curious to know what's going on here.