/etc/apt/sources.list:
deb http://mirror.ipb.de/debian/ bullseye main contrib non-free
deb-src http://mirror.ipb.de/debian/ bullseye main contrib non-free
deb http://mirror.ipb.de/debian/ bullseye-updates main contrib non-free
deb-src http://mirror.ipb.de/debian/ bullseye-updates main contrib non-free
deb http://deb.debian.org/debian-security bullseye-security main
deb https://www.deb-multimedia.org bullseye main non-free
/etc/apt/sources.list.d/pve-enterprise.list.dpkg-new
deb https://enterprise.proxmox.com/debian/pve bullseye pve-enterprise
deb http://mirror.ipb.de/debian/ bullseye main contrib non-free
deb-src http://mirror.ipb.de/debian/ bullseye main contrib non-free
deb http://mirror.ipb.de/debian/ bullseye-updates main contrib non-free
deb-src http://mirror.ipb.de/debian/ bullseye-updates main contrib non-free
deb http://deb.debian.org/debian-security bullseye-security main
deb https://www.deb-multimedia.org bullseye main non-free
/etc/apt/sources.list.d/pve-enterprise.list.dpkg-new
deb https://enterprise.proxmox.com/debian/pve bullseye pve-enterprise