I've asked pkg-systemd-maintainers about this issue and Yuriy M. Kaminskiy offered workaround:
mkdir /etc/systemd/system/bind9.service.d echo "[Service]\nExecStart=\nExecStart=/usr/sbin/named -4 -f -u bind" > /etc/systemd/system/bind9.service.d/local.conf systemctl reenable bind9.service http://lists.alioth.debian.org/pipermail/pkg-systemd-maintainers/2016-February/010937.html This workaround will not be affected by future upgrades, if bind maintainers will not add more bind9 start options. But this is only workaround. Real fix should be made by maintainers.