AT&T is still handing off a WAN IP, however it's only their DNS servers that are failing. There is a work around - connect to a VPN, if you have a larger network you can share DHCP through the VPN. Fixed!
This issue has been resolved as of Oct-30-2016 but what did we learn? We learned that even one of the largest internet service providers can fail! So if your still hosting email servers, phone systems or any other mission critical services on your local network, you really are taking your chances!
Consider cloud based solutions as a true solution to productivity and possibly cloud based redundancy.