Verified on the puddle RHOS-16.2-RHEL-8-20221124.n.1 which uses python3-networking-ovn-7.4.2-2.20220409154865.el8ost.noarch. Verified that tobiko tests test_qos_bw_limit and test_ping_dscp pass successfully after ovn migration.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Release of components for Red Hat OpenStack Platform 16.2.4), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2022:8794