an ``<interface/>`` might have resulted in closing of a random FD and thus
sudden disconnect of a client or other random failures.
+ * qemu: Fix hotplug of network interfaces
+
+ A logic bug introduced in a recent refactor was fixed. The bug caused a
+ problem when hot-adding a network interface, which failed with the
+ following error::
+
+ error: internal error: unable to execute QEMU command 'netdev_add': File descriptor named '(null)' has not been found
+
+ * Fix ``startupPolicy`` validation for ``block`` disks
+
+ Setting of ``startupPolicy`` for a block disk would result in an error due
+ to a logic bug in a recent refactor.
+
+ * qemu: Fix crash when overriding device properties via ``<qemu:override>`` element
+
+ Adding an override for a device property would result in a crash of the qemu
+ driver.
+
v8.4.0 (2022-06-01)
===================