File /etc/apt/sources.list
deb http://ftp.debian.org/debian bullseye main contrib deb http://ftp.debian.org/debian bullseye-updates main contrib # PVE pve-no-subscription repository provided by proxmox.com, # NOT recommended for production use deb http://download.proxmox.com/debian/pve bullseye pve-no-subscription # security updates deb http://security.debian.org/debian-security bullseye-security main contrib