I installed tomato shibby version 1.28 on my belkin paly max N600 (F7D8301) dual band router. Somehow it shows the 5Ghz interface is down and I can only see the SSID of the 2.4GHz interface. The router is behind an AT&T uverse modem/router and it is getting dynamic IP from there uverse router. I am new to the custom firmware stuff. Can someone point me where to start to troubleshooting. Thanks.