Network setup for OpenWRT router VM
The data section of the routers is set to the Proxmox host IP address. The data section of the domain-name-server should be populated with the IP address of the wireless router as has been used before.

Use Openwrt VM as Router

Switch to New Router Connect the WAN cable to the port which bridged to the WAN port of OpenWrt on the Proxmox VE server, also connect other hosts , switch and AP device to the LAN ports of the Proxmox VE server. You may need to connect your PC to the Proxmox VE server directly and set a static IP for your PC to use the Proxmox VE Web UI.
If Proxmox Webpanel is reachable via https://<YOUR-PRIMARY-IP>:8006/ you can be proud of yourself since the Host is now working :D. — Routed network configuration in Proxmox — But … yea we still need to configure our Proxmox Host to let the VMs and CTs connect to the internet with their own public IP.
Understanding Configure Wireless Router For Proxmox Kvm Host Before the Gallery
Proxmox/Opnsense VM VLAN setup : r/OPNsenseFirewall. This note connects the source idea with the visuals in a simple, reader-friendly way.
How to install Proxmox in 2023 - Server Decode. This note connects the source idea with the visuals in a simple, reader-friendly way.
Configure Proxmox Cluster with StarWind Virtual SAN: Full Guide. This note connects the source idea with the visuals in a simple, reader-friendly way.
Looking at multiple sources also helps separate the main idea from small decorative details.
These notes are added so the page offers more than images and gives each visitor a clearer reason to keep reading.