Comment 2 for bug 2069409

Hi Oleg Bondarev,

> If interface link id down It fails to add static route so the forwarding failing . So it breaking communication

https://github.com/openstack/neutron/blob/master/neutron/agent/l3/dvr_fip_ns.py#L458

> Reproduce stpes , is hard to write down . But we often seeing in our infras with fip attached to vm and DVR router setup