adding a PF to a linux bridge

Hi,

I have a VM that supports SRIOV using 2 VFs. And I need to setup another VM which doesnt support SRIOV using the linux bridges. So, I add the PF to the linux bridge using "brctl addif". This setup works for SRIOV VM but does not work for virtio-VM. The arp request from the external host is not seen on the linux bridge to which the PF is added. However, if the arp request is initiated from the virtio-VM, the arp request goes out to external host and both the VM and the external host have the arp entries populated and the ping works.

Is this right way to add the PF to the linux bridge? If yes, what else need to be done to make the setup work for VM with virtio interfaces?

thanks!