Hi,
Periodically router will loose WAN IP and when I connect to ATT Gateway I can verify internet still working, WAN address is still the same.
Hardware: AT&T Gateway <--> RT-AX88U <--> AC3100 (mesh)
RT-AX88U is in DMZ (IPPassThru)
Addons: Diversion, YazFI to isolate
Firmware: 386.4 ( same...