I've been searching and reading tons of forums but and I've been putting it off but I don't understand where the issue lies. So here's basically how my network is set up Arris TG3452a ISP (NAT, DHCP) ---> Linksys EA8300 (NAT?, DHCP) )))(((( Unifi AP-AC lite (802.11s, NAT?, DHCP) My first goal is to make port forwarding work. I'm running Wiregaurd on pi connected to the Linksys and when I port forward on the Arris, it won't work. I'm sure this is all boils down to bad configuration. Besides that I tried to put the Arris in bridge mode and..... nothing happens. I lose access to the internet and configuration page of the arris. So I have to factory reset to get it working again.
Possibly? From what I understand, if my isp router uses 192.168.0.XXX and my OpenWRT setup are configured on 192.168.1.XXX its double nat, right? If that's the case I'm not having double nat issues. not sure if I understand the concept correctly.
I'm using both Linksys and unifi for wifi coverage and extra ethernet ports. So what do you suggest? make both Linksys and unifi dumb aps? or put ISP modem in bridge mode? I tried putting ISP modern in bridge mode (I assume its a Half-Bridge), but when i do that i get 2 WANs. One on the arris and one on the linksys.
Maybe waiting for 5-15 minutes will reset your ISP's MAC address lock. Reboot your cable modem to help out. I had the same problem a decade ago when I had cable internet.
I've decided to revert to stock and it just worked. Then proceeded to flash openwrt again and it also worked? I have no idea why.... but everything is fine now. Port forwarding everything works perfectly.