Package: shairport-sync Version: 3.3.5-1 Priority: minor D-Bus policy configuration file is missed and the 'journalct -u shairport-sync' log contains the following message: Could not acquire a Shairport Sync native D-Bus interface "org.gnome.ShairportSync.i524" on the system bus
Configuration file can be copied from scripts/shairport-sync-dbus-policy.conf (in shairport-sync source tree) to /etc/dbus-1/system.d/shairport-sync-dbus-policy.conf
