/lib/systemd/system/dbus.target.wants/dbus.socket is in dbus 1.8.22-0+deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/systemd/system/dbus.target.wants/../dbus.socket
/lib/systemd/system/dbus.target.wants/../dbus.socket