[Cooker] virtualbox x86_64 dependencies issue

{pts/0}% LC_ALL=C sudo urpmi virtualbox
In order to satisfy the 'kmod(vboxdrv)[== 2.2.4]' dependency, one of the
following packages is needed:
 1- virtualbox-kernel-2.6.30-desktop-1mnb-2.2.4-1mdv2010.0.i586:
virtualbox driver for kernel 2.6.30-desktop-1mnb (to install)
 2- virtualbox-kernel-2.6.30-desktop-2mnb-2.2.4-1mdv2010.0.i586:
virtualbox driver for kernel 2.6.30-desktop-2mnb (to install)
 3- virtualbox-kernel-2.6.30-desktop-0.rc8.1mnb-2.2.4-1mdv2010.0.i586:
virtualbox driver for kernel 2.6.30-desktop-0.rc8.1mnb (to install)
What is your choice? (1-3)


Well ...

- I am on x86_64, how comes I am offered i586 packages?
- why dkms-virtualbox is not offered at all?