SR-IOV Adapter Teaming / Bonding

Is it possible to set up adapter teaming / bonding on two VFs from two Intel X520-T2 ports? I would like to add resiliency to my VMs....

I have two VFs within my virtual Windows Server 2008 R2 under Citrix XenServer 6.0 and simple networking works all fine for both, but the usual adapter teaming options within the Intel driver settings are not visible on the VF adapter properties.

Any Help?

Thanks in advance

Marco