Note that the Havana documentation clearly states that firewall_driver in nova.conf should be noop when using Neutron security groups => http://docs.openstack.org/havana/config-reference/content/nova_config_security_groups.html
Note that the Havana documentation clearly states that firewall_driver in nova.conf should be noop when using Neutron security groups => http:// docs.openstack. org/havana/ config- reference/ content/ nova_config_ security_ groups. html