Yep, a "stock" openstack install will tend to use OVN or VLANs -- Most public clouds throw that out completely since they are going to use their existing method

Yep, a "stock" openstack install will tend to use OVN or VLANs -- Most public clouds throw that out completely since they are going to use their existing methods for networking. its a shame, I've not found a public cloud that supports something like OVN.