Keeping the 1:1 relationship between OVN and OpenStack, we will need OVS 2.11 for OSP 15: upstream OVN 2.11 packaged in OVS 2.11 is developed in tandem with OpenStack Stein, both are supposed to release within a 2 week delay.
Fix verified: openvswitch2.11-2.11.0-12.el8fdp.x86_64 core_puddle: RHOS_TRUNK-15.0-RHEL-8-20190621.n.1 https://rhos-qe-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/view/DFG/view/network/view/networking-ovn/job/DFG-network-networking-ovn-15_director-rhel-virthost-3cont_2comp-ipv4-geneve/79/
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, 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/RHEA-2019:2811