Comment 6 for bug 2056799

FRR will allow leaking into a different VRF, but that doesn't appear to do what is needed, since br-ex relies on the kernel routing table to forward the traffic all the way through.

I think that what would have to happen here is management traffic on the node would have to be pinned in a similar fashion to how Cumulus does VRFs, and I don't know if that will work well with kolla-ansible.