So, up until today I had a HR-24 DVR and 4 standard def boxes from directv. I had connected the HR-24 to the internet via ethernet cable to my home router with no problems. Today I replaced one of the standard def boxes with another HR-24 installed by a directv tech and I turned on whole home DVR via the website. The tech said everything would work fine within a couple hours. But, the time has passed and neither of my HR-24's can see the other. What did I do wrong? Do I need to buy/install a broadband DECA?