I remember some video service using it, Vine I think? Also remember some news sites supporting it but its been far too long since I used chrome lol

I went back to termux after trying this since I like to use VPN for both external and internal communication to my servers.

If you are still using the setup in the post with what I suggested that’d probably be why. You wouldn’t need a tunnel container anymore, host networking, nor DNS settings. Just a web service that you want to expose. Is the host able to resolve the same domains properly?

Not trying to subvert your issue but why not use something that makes the tunnel an easy to make ingress the kubernetes way? I don’t use cf tunnels so I havent use this but it seems to be a proper solution.

https://github.com/STRRL/cloudflare-tunnel-ingress-controller

Edit: An operator linked in that github project could be useful too if you want to support udp and such https://github.com/adyanth/cloudflare-operator