neutron server log:
2015-07-02 11:25:56.099 12417 DEBUG neutron.plugins.ml2.drivers.mech_agent [req-7d46d980-133a-48c0-973e-fb45890f79ee ] Network f99769d3-e76c-4636-be2f-be863ff3de6d is connected to physical network physnet4, but agent c5-bl-6.contextream.local reported physical networks {u'physnet1': u'br-int'}. The physical network must be configured on the agent if binding is to succeed. check_segment_for_agent /usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/mech_agent.py:208

nova compute log:
2015-07-02 11:26:06.280 4910 ERROR nova.compute.manager [req-42307fae-108f-4087-8d77-fb94c921fdd6 - - - - -] [instance: c060320d-933c-4568-9baf-a4f76fd36075] Instance failed to spawn
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075] Traceback (most recent call last):
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2442, in _build_resources
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]     yield resources
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2314, in _build_and_run_instance
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]     block_device_info=block_device_info)
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2351, in spawn
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]     write_to_disk=True)
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4172, in _get_guest_xml
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]     context)
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4043, in _get_guest_config
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]     flavor, virt_type)
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/vif.py", line 374, in get_config
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]     _("Unexpected vif_type=%s") % vif_type)
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075] NovaException: Unexpected vif_type=binding_failed
2015-07-02 11:26:06.280 4910 TRACE nova.compute.manager [instance: c060320d-933c-4568-9baf-a4f76fd36075]