Comment # 1 on bug 1208704 from Thorsten Kukuk

(In reply to Ludwig Nussel from comment #0)
> TODO: get upstream to read /etc/sysctl.conf agin or if that fails move it
> with some migration script.

I would move it:

test -f /etc/sysctl.conf && mv /etc/sysctl.conf
/etc/sysctl.conf.d/99-sysctl.conf

Done. And we have a clean /etc without any hacks.