How DBus calculates machine id? (/etc/machine-id, /var/lib/dbus/machine-id). Which way is more correct to determine it?
The machine ID in
/etc/machine-id is usually randomly generated at system install by
systemd-machine-id-setup. On stateless systems it can also be generated at system boot. The format of the file originates from
/var/lib/dbus/machine-id introduced by D-Bus.
/var/lib/dbus/machine-id file is randomly generated by
dbus-uuidgen, typically invoked by the post-install script of a D-Bus package. It can also be a symlink to