Renderer scan fails when multiple network interfaces

Using (Video | Renderer | Scan) devices may not be found when there are multiple network interfaces. I normally have two active network interfaces using wireless for devices and wired for file service and other things. The scan typically sees no devices. If the wired interface is disabled the scan succeeds and I can then re-enable the wired interface and continue normally using the devices that were found during the scan.

Using the latest nightly build, Win7Pro64, Chromecast Audio devices