I've set up Proxmox a couple times. I do exactly what you described, using dnsmasq. There are a few blog posts out there, this is one [1] I used for inspiration

I've set up Proxmox a couple times. I do exactly what you described, using dnsmasq. There are a few blog posts out there, this is one [1] I used for inspiration. I too wish it was a built-in Proxmox feature, or at least officially documented... [1]: https://blog.jenningsga.com/private-network-with-proxmox/ https://blog.jenningsga.com/private-network-with-proxmox/