root@pbs:~# date
Mon 17 May 2021 09:33:11 AM CEST
root@pbs:~# uname -a
Linux pbs.domain.tld 5.4.106-1-pve #1 SMP PVE 5.4.106-1 (Fri, 19 Mar 2021 11:08:47 +0100) x86_64 GNU/Linux
root@pbs:~# apt update
Hit:1 http://repository.veeam.com/backup/linux/agent/dpkg/debian/public stable InRelease
Hit:2 http://security.debian.org buster/updates InRelease
Hit:3 http://download.proxmox.com/debian/pbs buster InRelease
Hit:4 http://ftp.fr.debian.org/debian buster InRelease
Get:5 http://ftp.fr.debian.org/debian buster-updates InRelease [51.9 kB]
Fetched 51.9 kB in 1s (38.0 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
root@pbs:~# apt install pve-headers
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package pve-headers
root@pbs:~#