Embed Notice

D-Bus' model is built around a central broker daemon, which is started during boot, but unfortunately relatively late (i.e. together with other, regular daemons instead of early boot or the initrd). However, systemd brings up the system as a whole and hence needs IPC from earliest moment on.

And then there are various components of systemd that the D-Bus broker relies on (i.e. consumes functionality of) and hence cannot themselves provide their services on D-Bus, …