Open Stack

designate-sink currently ships with a nova_fixed handler, which listens 
for nova events compute.instance.create.end and 
compute.instance.delete.start, and a neutron_floatingip for events 
floatingip.update.end and floatingip.delete.start.

1) is it correct to say that nova_fixed is for "internal" IP addresses 
(for intra-cloud networking) and that neutron_floatingip is for 
"external" IP addresses (for access from outside the cloud)?
2) nova can also assign and remove floating IP addresses (nova 
add-floating-ip/remove-floating-ip) - should we have listeners for nova 
network.floating_ip.associate and network.floating_ip.disassociate events?
3) is there a difference between nova and neutron floating IP addresses?