The d-bus activation thing is a quirk of systemd, it actually tells you when you run stop. You need to use disable (as well as stop) to both stop it and prevent re-activation.
root@ubuntu:~# systemctl stop avahi-daemon Warning: Stopping avahi-daemon.service, but it can still be activated by: avahi-daemon.socket You're right about the ifupdown script, though. The good news on the one hand is that upstream hopefully soon nss-mdns will be improved to no longer need this trick. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1616196 Title: unable to stop avahi-daemon (dbus always restarts it) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1616196/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs