I have had directv for several years with no problems. Yesterday I had a tech come out to install the multi room dvr. It is not working. In my setup menu on all my recievers if I go to multi room and status, it says no networked dvr found. Attached is a picture of how he set it up. Also with this setup will my DVR be hooked to the internet with the router hooked up to the deca of another receiver as pictured? Or do I need to add one more ethernet cable from the HR21-700 to its deca or does the internet go through the coax? Thanks for the help guys.