Quantum overlapping IPs recommended procedure
The limitations chapter of the Quantum administration manual (chapter 10), says that "If you enable [allow_overlapping_ips], you must disable both Nova security groups and the Nova metadata service." How do I do that?
One thing I noticed when I enabled overlapping IPs is that during booting my VMs would get stuck a very long time waiting for a response from the metadata server. When I disable overlapping IP, I still cannot connect to the metadata server, but each of the 30 iterations the VM goes through trying to reach the server goes by way faster.