Dish Hopper - tech was out and said ATT needed a router to "bridge"

So I have a Dish Hopper w/ 2 Joey's.  in the last few month's my Joey continually loses Broadband connection multiple times a night.  Resetting the network connection only works for a little while and it will happen again.  We had a Dish tech come out and he replaced the Joey (it was 4+ years old).  However, he informed me that ATT recently ( a few months ago) updated their "bridging policy".  Which, according to the DISH tech means we need a router to solve this problem.  My quesiton is - what kind of router does anyone recommend and how do we set it up for bridging correctly?  Apparently, the Joey's broadband connection comes through the Hopper - they aren't connected to the Wi-fi separately.  We do NOT have any devices wired directlt to the ATT modem/Gateway.