+ o drop modprobe floppy alias (SUSE), it will be in the module (2.6.30)
+ o remove MMC rules, they got a modalias now (2.6.30)
+ o add scsi:t-0x09* to "ch" and remove modprobe rule (2.6.30)
+
+ o add socket_filter (BPF) to match on properties to select which
+ messages are received on the socket:
+ udev_monitor_filter_property(mon, "SUBSYSTEM", "block");