Hi,
I know this is some kind of NAT loopback problem, but I'm clueless as to how to fix it.
AT&T ftth with Arris BWG210-700 gateway:
Public IP 75.x.x.x
DHCP 192.168.2.1 - 192.168.2.4 and gateway address 192.168.2.254
Firewall, WiFi, Packet filter all off
Port 1 goes to my Asus RT-AC88U...