If *both* "use_dbus" and "zeroconf" are false, by either setting them to False in mandos.conf or by using the --no-dbus and --no-zeroconf options (and a port number or socket is specified), then we do not need to connect to D-Bus at all.
From: Mike Klein <mike@kleinnet.com> Signed-off-by: Teddy Hogeborn <teddy@recompile.se>