Comment 22 for bug 1244255

So, I don't know why the vif_type=binding_failed happens. I don't get any WARNING about trying to bind with a dead agent, so it is not reaching that part of the code. So my best guest is that this is happening because the host has no agents just yet:

https://git.openstack.org/cgit/openstack/neutron/tree/neutron/plugins/ml2/drivers/mech_agent.py#n59

A few minutes later all works fine, so I'm guessing we're just scheduling things to nova-compute before it definitely has a neutron agent to bind things to.