Using as comment
Standard RDO Mitaka RC3 multinode deployments ML2&OVS&VXLAN like

 Controller+2*Network+Compute (HA support for DVR centralized default SNAT functionality -test)
 Controller/Network+N(*)Compute (DVR)
 Controller/Network+Storage+N(*)Compute (DVR)

on CentOS 7 has: Linux 3.10.0-327.13.1.el7.x86_64

Report up on completion "Kernels updated,reboot of all nodes required"
No linuxbridge has been used ,  just OVS 2.4.0 (openvswitch )

The only issue with OVS 2.4.0+VXLAN seems to have Nova-Docker driver (stable/mitaka), which works fine with OVS 2.4.0+VLAN is addressed here

http://lxer.com/module/newswire/view/...
Personally, I have not noticed on RDO Mitaka RC3 && CentOS 7.2 problems with OVS 2.4.0 - openvswitch 2.4.0