Arch Linux

Description:
When the avahi package is installed, avahi-daemon.service will fail to start and produces the following error in the journal:

Sep 24 15:26:02 jarvis avahi-daemon[327]: avahi-daemon 0.7 starting up.
Sep 24 15:26:02 jarvis avahi-daemon[327]: dbus_bus_request_name(): Connection ":1.90" is not allowed to own the service "org.freedesktop.Avahi" due to security policies in the config
Sep 24 15:26:02 jarvis avahi-daemon[327]: WARNING: Failed to contact D-Bus daemon.
Sep 24 15:26:02 jarvis avahi-daemon[327]: avahi-daemon 0.7 exiting.
Sep 24 15:26:02 jarvis systemd[1]: avahi-daemon.service: Main process exited, code=exited, status=255/n/a

This is because the dbus policies in /etc/dbus-1/systemd.d/avahi-dbus.conf have not been applied because the dbus service has not been reloaded.

The issue can be fixed by rebooting or running 'systemctl reload dbus'. I haven't encountered this problem before on my other Arch machines so I suspect that it might be a new regression.

Additional info:
avahi 0.7-1
dbus 1.10.22-1


Steps to reproduce:

pacman -S avahi
systemctl enable avahi-daemon.service
systemctl start avahi-daemon.service

--- observe that service will not start; inspect journal logs ---

systemctl reload dbus
systemctl start avahi-daemon.service

--- observe that service now starts properly ---