be emulated by a rule placed before all other rules:
ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus"
+The option "udev_db" does no longer exist. All udev state will always
+be in /$udev_root/.udev/ now, there is no longer an option to set this
+to anything else.
+
+Default location for rule sripts and helper programs is now: /lib/udev/.
+Everything that is not useful on the commandline should go into this
+directory. Also /lib/udev/devices/ is recommended as a directory where
+packages or the user can place real device nodes, which get copied over
+to /dev at every boot. This should replace the various solutions with
+custom config files.
+
+Udevsend does no longer start the udev daemon. This must be done with
+the init script that prepares /dev on tmpfs and creates the initial nodes,
+before starting the daemon.
+
udev 075
========
Silent a too verbose error logging for the old hotplug.d/ dev.d/