ovs: ovs agent updates the wrong port when using Xen + Neutron Problem: When VM is under HVM mode, ovs will create two ports and two interfaces for a single virtual ethernet interface inside the VM: One is named as tapx.0 which is qemu-emulated NIC, used when no PV drivers installed; The other one is named as vifx.0 which is the xen network frontend NIC, used when VM has PV drivers installed. Depending on the PV driver's existing, either of the two ports/interfaces will be used. But current implement can NOT process multiple ports/interfaces. If it configures(e.g. set tag) one interface but the other one is in fact used by ovs; it will have network problem. (233498)

ovs: ovs agent updates the wrong port when using Xen + Neutron Problem: When VM is under HVM mode, ovs will create two ports and two interfaces for a single virtual ethernet interface inside the VM: One is named as tapx.0 which is qemu-emulated NIC, used when no PV drivers installed; The other one is named as vifx.0 which is the xen network frontend NIC, used when VM has PV drivers installed. Depending on the PV driver's existing, either of the two ports/interfaces will be used. But current implement can NOT process multiple ports/interfaces. If it configures(e.g. set tag) one interface but the other one is in fact used by ovs; it will have network problem. (233498) · Gerrit Code Review