Comment # 22 on bug 917818 from Johannes Weberhofer

(In reply to Andreas Stieger from comment #21)
> Johannes, if this is too invasive, especially for working setups, we can
> push this to 42.2. If you think this should be a 42.1 maintenance update
> we'll review python-systemd.

Andreas, when the sysadmins followed the fail2ban guidelines, then the update
is not problematic (IMHO). Internally many things have changed. I have fail2ban
currently running on at ~6 machines; all rules provided by fail2ban were
running without issues but I had to adapt some of my additional rules. That's
why I was waiting so long before submitting the update. 

There also was e.g. issue #971941 - such things may happen with the release and
improper configured software.