<constant>NULL</constant>.</para>
</refsect1>
+ <refsect1>
+ <title>History</title>
+ <para><function>udev_monitor_new_from_netlink()</function>,
+ <function>udev_monitor_ref()</function>, and
+ <function>udev_monitor_unref()</function> were added in version 221.</para>
+ </refsect1>
+
<refsect1>
<title>See Also</title>