Loop in requests from the same machine

[corndelphinus]

Hello community!
I have a VM as a webserver in Proxmox.
When I do a wget from the VM or Proxmox to the hosted website, the request will probably get looped and I will get "connection refused".

However, when I make this request from my machine, this looping does not occur. So I must have misconfigured my traffic redirection rules. Can you please help me to detect the problem?

Does anyone have any advice?

 

[corndelphinus]

Alternatively, I use a VPS (which I want to get rid of and move completely under Proxmox) where I don't have this problem.

That's why I suspect my networking setup in PVE.

The website behaves correctly only if I hide the IP address of the domain after Cloudflare Proxy. If I access the site directly, the loading starts after 10 seconds (there is probably some timeout in the loop). So I started to debug the problem on wget from the given VM and wrote this post.