Open Stack

Hello,

Do You know is there any way to save all history of each fixed IP assigned to 
port (and instance). For example: I have external network with some subnet. 
User is creating instance A connected to this instance so I have in history 
that IP x.x.x.x was assinged to instance A, then he delete instance so in 
history there is info that IP is not assigned to instance. And so on. 
I'm using openstack havana version and neutron with ML2 and I don't see such 
possibility but maybe I'm wrong :)

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Best regards
Sławek Kapłoński
slawek at kaplonski.pl