now you can migrate to ovn from an ovs deployment with iptables_hybrid firewall. Remove any statements like this one that say you can't. Also check 16.2 release notes and migration guide. Reported by: jamsmith https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/17.0/html/testing_migration_of_the_networking_service_to_the_ml2ovn_mechanism_driver/migrating-ml2ovs-to-ovn#annotations:8625979a-8f91-4871-83f5-3dec60752fb7
*** This bug has been marked as a duplicate of bug 2054670 ***