Conflicts=shutdown.target
After=systemd-readahead-collect.service systemd-readahead-replay.service
Before=sysinit.target shutdown.target
+ConditionPathIsReadWrite=/proc/sys/
ConditionPathExists=|/etc/sysctl.conf
ConditionDirectoryNotEmpty=|/lib/sysctl.d
ConditionDirectoryNotEmpty=|/usr/lib/sysctl.d