Comment 13 for bug 1383674

If you restart 3 agents at the same time, and in the meanwhile a multicast/broadcast
packet enters br-tun, we get a network storm (Loop between the 3 openvswitch br-tuns)

NodeA -> NodeB -> NodeC -> NodeA

This brings down the network.

This would be avoided if we re-created br-tun in fail-mode "secure" at least,
because that doesn't introduce the "NORMAL" default switching rule on the switch
at creation (origin of this problem.)

We should rise the priority of this bug to the maximum available.