u/SJPearson

I've got Technitium setup and running and now i'd like to switch to DNS over TLS for my forwarders (Cloudflare and Quad9). This appears simple enough, I select Cloudflare over TLS and it automatically selects the correct protocol, I save the changes. then I test a ping from a laptop on the network (it's DNS is pointing to Technitium) and I ping something unusual that won't be in the cache. I then sheck the logs on the dashboard and I see a recursive lookup (as expected) but over UDP not TLS.

I can't see anything else to change so i'm a confused as to how to troubleshoot this. (yes i've tried rebooting)

Can anyone advise what i'm doing wrong or how I can troubleshoot this issue please?

I have a Ubuntu Host running 24.04.4 LTS with docker and docker-compose. There are multiple containers across different networks, both the default docker bridge and a couple of custom networks, and these talk to each other using API calls via the URL of the target container in the format http://HostIP:Port

This has worked perfectly for well over 18 months (including on 22.02).

For unrelated reasons I've had to change my LAN network address, and obviously as part of this I've changed the IP address of the host (including rebooting it of course).

The containers are running and working in their own right, but when I try to change the url for the API connections, it is unable to talk to the target container. This is happening on multiple containers.

This must relate to the change of IP on the host in some way, but i'm not sure why, or how to fix it. I'm suspecting that maybe when you install docker it "binds" to the host IP in some way (maybe for the default bridge) and I need to update this, but I'm not sure.

Before I rip it all out and redeploy in an attempt to fix this issue, has anyone got any suggestions on the cause and/or resolution to this at all please?