Comment # 11 on bug 842357 from Thomas Blume

Actually, the return codes of service units were changed with systemd-210.
For reference, please take a look at bsc#901796 .

I've tested with 13.2 and SLES12 and couldn't reproduce the issue:

-->--
# ps aux | grep dhcpd
dhcpd     7643  0.0  0.0  36732  4400 ?        Ss   15:17   0:00
/usr/sbin/dhcpd -4 -cf /etc/dhcpd.conf -pf /var/run/dhcpd.pid -chroot
/var/lib/dhcp -lf /db/dhcpd.leases -user dhcpd -group nogroup net0 br0
root      7722  0.0  0.0   9256  1624 pts/4    S+   15:22   0:00 grep
--color=auto dhcpd

# killall dhcpd

# ps aux | grep dhcpd
root      7746  0.0  0.0   9256  1616 pts/4    S+   15:22   0:00 grep
--color=auto dhcpd

# service dhcpd start

# ps aux | grep dhcpd
dhcpd     7931  0.0  0.0  36732  4396 ?        Ss   15:22   0:00
/usr/sbin/dhcpd -4 -cf /etc/dhcpd.conf -pf /var/run/dhcpd.pid -chroot
/var/lib/dhcp -lf /db/dhcpd.leases -user dhcpd -group nogroup net0 br0
root      7936  0.0  0.0   9256  1572 pts/4    S+   15:22   0:00 grep
--color=auto dhcpd
--<--

-> closing as fixed in latest version.