we need some custom changes in OpenStack for:
- Network management
- IP assignment
[url removed, login to view]
Pretty much need to be done what's written on line: 1485 - 1490
"The idea is to create a single network for the host with a command like: nova-manage network create 192.168.0.0/24 1 256. Creating multiple networks for for one manager is currently not supported, but could be added by modifying allocate_fixed_ip and get_network to get the network with new logic. Arbitrary lists of addresses in a single network can be accomplished with manual db editing."