Think I figured it out… It appears to be the Google FI VPN. I turned off the VPN after reading the other thread about the HD SkyBell and now my phone is streaming video. Based on my earlier tests, this leads me to believe that the VPN is also filtering wifi data on the phone, but does not work in tethering mode. So I would recommend all Google Fi users shut off the VPN and see if they are able to get the video feed.