Virtualbox jail not running after virtualbox-ose-kmod updated

Hi all,
as part of Feature #18630 Update to 2016Q4 Ports Tree is updated virtualbox-ose-kmod from 4.3.34 to 5.1.6:

current night build FreeNAS-9.10-MASTER-201612100422 (4d7d293)
[root@freenas3] ~# pkg info | grep -i virtualbox
virtualbox-ose-kmod-5.1.6  VirtualBox kernel module for FreeBSD

last stable FreeNAS-9.10.1-U4 (ec9a7d3)
[root@freenas] ~# pkg info |grep virtualbox
virtualbox-ose-kmod-4.3.34  VirtualBox kernel module for FreeBSD

Because of this update startup of Virtualbox VM in...

Virtualbox jail not running after virtualbox-ose-kmod updated