Comment # 4 on bug 917818 from Robin Roth

fail2ban requires "syslog", but in a 13.2 installation with all current
updates:
'systemd-logger' providing 'syslog' is already installed.

systemd-logger is a dummy package that only provides a /var/log/README telling
you to not look at /var/log/messages but use the systemd infrastructure.

So the dependency on syslog does not make sense. One could change it to rsyslog
or syslog-ng to get a /var/log/messages, but this would then break the systemd
install and removes journald. So this is not a realistic option.

In my opinion any package should provide sensible defaults and work out of the
box. To do so an upgrade to 0.9.1 also in 13.2 would be important. As soon as
there's a factory version available I could help test a backport to 13.2.
13.1 is not affected as there journald is not yet the default.