floating IP rules in table=21 are created in all computes - creating duplicate packets

When a VM is associated with a floating IP, rules for that floating IP are created on all compute nodes.

In the compute node hosting the VM the rule created is a forwarding rule towards the FIP tables and eventually output to the VM port.

On the other computes, the rules installed are output to tunnel for the compute hosting the VM.

When a packet is flooded with dstip=FIP on the external network, both computes process it. The computes which don't host the VM send the packet over the tunnel, and therefore cause duplicate packets to arrive to the VM.