
A network used to allocate MAC addresses for OVN chassis. Ports without and IP allocation will be created on this network, the MAC addresses of the ports will by used to configure the ovn-chassis-mac-mappings. NOTE, we may want to change the 'base_mac' option of the undercloud, so that we don't have collissions with the overcloud 'base_mac'. Related-Bug: #1881593 Change-Id: If495b5d5c1e6beff02b48507051cccfb70fd995c