Package: fail2ban Version: 1.0.2-1 Severity: important fail2ban currently installs its fail2ban.service file into /usr/lib/systemd/system/, but dh_installsystemd does not handle files in this location (#1031695).
It seems like fail2ban moved the file in this commit: https://salsa.debian.org/python-team/packages/fail2ban/-/commit/bdb82eb3b26485f9ec585896503d3afeed812dc1 If fail2ban wants the automatic install/start/restart behaviour, and I think it does, because that works in bullseye, probably that commit needs a revert for bookworm. Chris