/usr/share/dbus-1/ is in avahi-daemon 0.6.31-4ubuntu1.3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dbus-1/interfaces/
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.AddressResolver.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.DomainBrowser.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.EntryGroup.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.HostNameResolver.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.RecordBrowser.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.Server.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.ServiceBrowser.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.ServiceResolver.xml
/usr/share/dbus-1/interfaces/org.freedesktop.Avahi.ServiceTypeBrowser.xml
/usr/share/dbus-1/system-services/
/usr/share/dbus-1/system-services/org.freedesktop.Avahi.service