Proxmox Firewall Blocking Access to Container via Domain Name, but Allows Direct IP Access

Hello everyone,

Let me explain the situation to see if you can help me:

I have configured the firewall in Proxmox to access a container running Proxmox Backup Server.

The rules I’ve applied to the PBS container are the following:

• Block any request and protocol from any IP.
• Allow TCP requests from a list of IPs (the two devices I want to access from the browser to view or configure something).

The thing is, these rules are working correctly. However, when instead of...

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