Open Stack

>GRE tunnels are created between all the openstack nodes for the private networks
>I'm not sure what decides which IP's should be in the GRE mesh network but ip's from the Quantum bridge mapped > networks are also added.

Problem solved,

The local_ip in ovs_quantum_plugin.ini is used. 
Puppet was messing with that setting due to a buggy custom fact.

Cheers,
Robert van Leeuwen