Open Stack

> 1. FLAG --auto_assign_floating_ip (default=False)
> 2. Optional parameter "auto_assign_floating_ip" in existing "create" method
> 3. OpenStack API add floating_ip - allocate_floating_ip, associate_floating_ip
> 
> What way is more suitable at this time?

I think primarily #1, with some degree of #3 for supporting things like shared ips. 

I'd love to work with you on this particular feature.