* Write a pid-file, even when being started using systemd, since other components may wish to signal dnsmasq. * Enable dnsmasq systemd unit on install. Otherwise dnsmasq does not run on fresh installations (without administrator handholding) and even worse it is disabled on systems switching from sysv to systemd. Modify postinst/postrm exactly as dh_systemd would, add dependency on init-system-helpers. Closes: #724602