My modem has a build-in router function (192.168.0.0/24), so I set the DMZ machine to my ASUS router (192.168.1.0/24). When visiting my home network using a DDNS address it only pass through to the modem, but cannot get further to the ASUS router. I've tried both firmware 380.63_2 and 380.62_1, and on both AC68U and a brand new AC1900P. Of course tried both ASUS and Merlin loop. Is the double NAT causing the problem? How can I resolve it ? I don't know how to pass the WAN IP from my modem directly to ASUS router but if that's the only way then I will have to call the ISP technical support..
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