DNS resolution stops working when coredns gets restarted

[DevSecNinja]

Hey Devin - thanks very much for this awesome template! I ran the template a few years ago with Ubuntu but recently restarted with a simple one node architecture on a Proxmox VM. I noticed a strange issue upon redirecting clients to an auth-url and when coredns gets restarted. I documented the issue and the fix on my GitHub fork and thought you might be interested in potentially also adding this change to the template. I'm not 100 % sure on the impact of this change but I'm not super advanced on Kubernetes. I'll keep an eye out for any strange issues that may arise.

DevSecNinja#962

[onedr0p]

Looks like a good compatibility change. Please open a PR when you have time, if not soon I can get to it too. Thanks for details into this, it's the first I'm hearing about it.

[DevSecNinja]

Thanks - will do! Yeah first time for me too. I was able to find 166 repos with Cilium in Kubesearch and 6 repositories with socketLB.hostNamespaceOnly to true. Bunch of them have Authentik or Authelia set up so I'm curious if others ran into this as well.