This feature should extend ovirt-ovn-provider adding support for physical network access. It should allow user to connect external OVN networks to a physical (oVirt Data Center) network.
Progress of this feature is tracked on Trello , related patches could be found on gerrit  and feature page (containing usage and testing info) can be found as a pull request on ovirt-site .
The code for this feature is already in 4.2.1, and its feature page is approved. Burman has already started testing it. Formally moving to ON_QA.
Feature page was merged and is available on https://ovirt.org/develop/release-management/features/network/provider-physical-network/
Verified on - 220.127.116.11-0.1.el7
NOTE - If the ovn network has it's own subnet, then the VM will get the IP from ovn network subnet and not from the phys network.
In order to get the IP from the phys network, the ovn network should be without subnet.
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.