@glequeau Thank you very much for your help, I understand better why it caused issues on Proxmox but not on virt-manager (QEMU).
Thank you for your response, I did indeed uncheck “Unprivileged container” and I checked “NFS” and “Nesting” under Options > Features.

@mass Thank you very much for your help, I understand better why it caused issues on Proxmox but not on virt-manager (QEMU).
Thank you for your response, I did indeed uncheck “Unprivileged container” and I checked “NFS” and “Nesting” under Options > Features.

I tried to install a Fog server with a static IP address in a virtual network that I manage from a Proxmox server. On this Proxmox server, I have pfSense, Windows Server, and a GLPI server. I also have multiple clients, and everything is working well (local DNS, DHCP, etc.), except for when I try to set up my Fog server (version 1.5) on an LXC container running Ubuntu Server 20.04.

I am encountering a problem with the NFS Server. I want to mention that I am setting up this network for a school and professional environment.

For my installation, I followed these steps:

What DNS address should DHCP allow? [192.168.1.1] 192.168.1.10
Would you like to use the FOG server for DHCP service? [y/N] n
This version of FOG has internationalization support, would you like to install the additional language packs? [y/N] y
Would you like to enable secure HTTPS on your FOG server? [y/N] n
Which hostname would you like to use? Currently is: SrvFOG.lan
Would you like to change it? If you are not sure, select No. [y/N] y
Which hostname would you like to use? fog.mass.lan
FOG would like to collect some data...
What is this information used for?

Any help or suggestions would be greatly appreciated.
error :

• Setting up and starting NFS Server…Failed to get unit file state for nfs.service: No such file or directory
  Failed!