ajacoutot 0fbf046b58 anacron(8) is not a daemon, so there's no reason to have an rc.d script.
Instead use @reboot in root's crontab.

ok giovanni@ (maintainer)
2016-01-11 06:59:48 +00:00
..

$OpenBSD: README,v 1.3 2016/01/11 06:59:48 ajacoutot Exp $

+-----------------------------------------------------------------------
| Running ${FULLPKGNAME} on OpenBSD
+-----------------------------------------------------------------------

To start using anacron:

Create the file ${SYSCONFDIR}/anacrontab (see anacrontab(5) for
information about its format).

The following is a simple example which runs the standard
OpenBSD daily, weekly, and monthly scripts:

-----Cut
# ${SYSCONFDIR}/anacrontab example
SHELL=/bin/sh
PATH=${PREFIX}/sbin:${PREFIX}/bin:/sbin:/bin:/usr/sbin:/usr/bin
# format: period delay job-identifier command
1  5  cron.daily   sh /etc/daily 2>&1   | tee /var/log/daily.out
7  10 cron.weekly  sh /etc/weekly 2>&1  | tee /var/log/weekly.out
30 15 cron.monthly sh /etc/monthly 2>&1 | tee /var/log/monthly.out
-----Cut

Comment out the invocation of these jobs in root's crontab.

If your machine is left running for more than 24h at a time, you
might also want to invoke anacron from an early morning cron job.

To run anacron(8) at boot time, add the following to root's crontab(5):
@reboot	${PREFIX}/sbin/anacron -ds