you enable use-systemd: yes in unbound.conf.
Also there are contrib/unbound.socket and contrib/unbound.service:
systemd files for unbound, install them in /usr/lib/systemd/system.
Contributed by Sami Kerola and Pavel Odintsov.
git-svn-id: https://unbound.nlnetlabs.nl/svn/trunk@3975 be551aaa-1e26-0410-a405-d3ace91eadb9
