/usr/share/doc/ffado-dbus-server/AUTHORS is in ffado-dbus-server 2.1.0+svn2240-1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/ffado-dbus-server/../libffado2/AUTHORS
/usr/share/doc/ffado-dbus-server/../libffado2/AUTHORS