Rossella asked me about this yesterday [1]. A brief discussion in the DVR meeting this morning [2] seems to indicate it is not a serious problem. But, I thought I'd submit this bug as a place to land for others who see this warning. Hopefully at some point we can get it cleaned up.
Here is the warning line from the log snippet in the pastebin [1].
57582 2014-08-27 14:15:50.401 16987 WARNING neutron.plugins.ml2.drivers.l2pop.mech_driver [req-ba914881-f88d-4793-a635-f4844855c9dd None] Port 2aba 57cd-5739-433e-bf9a-60193b6bc4e8 updated by agent <neutron.db.agents_db.Agent[object at 5cce710] {id=u'c203256b-1168-4c44-893e-42c873050a2c', agent_type=u'Open vSwitch agent', binary=u'neutron-openvswitch-agent', topic=u'N/A', host=u'precise64', admin_state_up=True, created_at=date time.datetime(2014, 8, 26, 14, 48, 29), started_at=datetime.datetime(2014, 8, 27, 10, 39, 35), heartbeat_timestamp=datetime.datetime(2014, 8, 27, 14, 15, 50), description=None, configurations=u'{"arp_responder_enabled": false, "tunneling_ip": "127.0.0.1", "devices": 11, "l2_populat ion": true, "tunnel_types": ["vxlan"], "enable_distributed_routing": true, "bridge_mappings": {}}'}> isn't bound to any segment
[1] http://paste.openstack.org/raw/101070/
[2] http://eavesdrop.openstack.org/irclogs/%23openstack-meeting-alt/%23openstack-meeting-alt.2014-08-27.log at 2014-08-27T15:23:22
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