Hi i’m using a 4G router as we live in the countryside and its the best way to get internet. I use a TP link Archer MR600 with 3 deco mesh nodes set up in access point mode - which should avoid double nat. However, i’m still getting this error message? Any advice?
Please accept my apologies for the extreme delay, as we’ve worked diligently to reach every ARC user who has reported a port forwarding issue over the last several weeks. There’s no excuse for having tried your patience, and I hope you’ve at least been able to enjoy Roon 2.0 on your home network in the meantime.
Service providers will have implemented a carrier-grade network address translation for your account if you have a 4G router, likely what’s triggering the MultipleNATFound message in diagnostics.
In its current implementation, ARC can’t circumvent carrier-grade NAT. That said, several users in your situation have rather easily bypassed their ISP’s address translation by using one of the unofficial proxy methods listed in our #tinkering section (such as Tailscale or a VPN).
If you’d like to continue to troubleshoot within the realm of port forwarding, it’s certainly possible that your service provider has a pathway for allowing port forwarding or options for changing out routers, IP addresses, etc. free of charge or for little cost. I recommend you pass along the following questions to their service department:
Have you implemented carrier-grade NAT for my account level?
Have you fully implemented IPv6, or do you have IPv4 addresses available?
Can I request a static IPv4 address to support port forwarding?
Are there any ports you have reserved at the ISP level I should be aware of?