On Xenial, I added "-n1" to the OPTIONS in /etc/default/bind9 then restart bind9 and didn't see the new argument:
# ps aux| grep named bind 667 0.1 15.3 206588 27156 ? Ssl 12:20 0:00 /usr/sbin/named -f -u bind Upgraded: The following packages will be upgraded: bind9 (1:9.10.3.dfsg.P4-8ubuntu1.8 => 1:9.10.3.dfsg.P4-8ubuntu1.9) Then the arg is now showing up as expected: # ps aux| grep named bind 10720 0.0 15.0 206328 26584 ? Ssl 12:24 0:00 /usr/sbin/named -f -n1 -u bind ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1565060 Title: defaults file is ignored To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/1565060/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs