Comment 4 for bug 1968860

IIRC we need to populate arp entries in the DVR routers' namespaces because e.g. in case of the routing between two different, private networks when VMs are on different nodes, we can't basically send arp requests as those will not come back properly to the correct node.
So we need to populate arp entries to the router namespaces on all hosts.

@uchenily can You give exact steps to reproduce that issue? I will try to reproduce and check it locally then.