Dear Maintainer, just a confirmation. I tested a new Stretch installation and upgraded to current Buster/testing and it went through without any issue.
Thank you very much. Kind regards, Bernhard root@qnap-119p-ii:~# uname -a Linux qnap-119p-ii 4.9.0-8-marvell #1 Debian 4.9.130-2 (2018-10-27) armv5tel GNU/Linux root@qnap-119p-ii:~# apt dist-upgrade ... Setting up qcontrol (0.5.6-4) ... Installing new version of config file /etc/qcontrol/ts209.lua ... Installing new version of config file /etc/qcontrol/ts219.lua ... Installing new version of config file /etc/qcontrol/ts41x.lua ... update-initramfs: deferring update (trigger activated) Created symlink /etc/systemd/system/multi-user.target.wants/qcontrol.service → /lib/systemd/system/qcontrol.service. Created symlink /etc/systemd/system/multi-user.target.wants/qcontrold.service → /lib/systemd/system/qcontrold.service. Created symlink /etc/systemd/system/sockets.target.wants/qcontrold.socket → /lib/systemd/system/qcontrold.socket. ... root@qnap-119p-ii:~# reboot root@qnap-119p-ii:~# uname -a Linux qnap-119p-ii 4.19.0-1-marvell #1 Debian 4.19.12-1 (2018-12-22) armv5tel GNU/Linux