Is that because the AT&T router uses the same subnet as tailscale? I seem to remember seeing similar issues in the past?
Comment on Tailscale difficulties
Broadfern@lemmy.world 4 days ago
This may sound crazy but do you have an AT&T router?
I have not been able to solve it myself yet unfortunately but having two routers has made it impossible for me to use Tailscale/Wireguard/ZeroTier etc. in much the same way as you’re describing.
The devices “see” each other but can’t connect no matter what configuration I follow, what firewall settings I tweak, nothing. I think there’s a pass through problem where UPnP is in conflict.
Sorry I don’t have an answer but I promise you’re not alone in your frustration.
AbidanYre@lemmy.world 4 days ago
Broadfern@lemmy.world 4 days ago
Maybe? The port setups work fine on the home router (such as accessing Steam link/Sunshine from a TV) but because it’s behind the mandatory AT&T modem it causes some nasty configuration headaches for external access.
pirateMonkey@lemmy.world 4 days ago
Misery loves company! Mine is Verizon and there was a setting that was causing me trouble recently, but probably is unrelated to yours (was DNS rebind protection).