So this has happened a few times and I spent a lot of time troubleshooting, but whenever I have IPv6 setup on my Yellow, Remote Access inevitably stops connecting at some point. And I have verified that the IPs (v4 and v6) on my systems haven't changed. If I disable v6 remote UI access is restored and it's actually driving me a bit insane now. 🙂 If it just completely stopped working when it was enabled I could work with that, but it does work for some random amount of time (this last time it was good for over a month) then it just hung.
Does anyone have any suggested config or testing I can do to get a bit deeper into why this is happening?