Thank you, problem solved!!! On all other firmware I used before, I didn’t turn off the 'Enable VPN + DHCP Connection' option, but iptv worked. Now I turned off this item on your firmware and iptv started working.First thing to try is to make sure 'Enable VPN + DHCP Connection' is set to No on the WAN setup page for PPPoE.
I will stay on your firmware, I like very good wifi speed for ac66u 2013 release. Thanks again.