Comment 14 for bug 1460164

On a full agent restart, tunnels are setup:

2015-12-18 14:41:51.505 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Port 826251b8-cc26-435e-9488-16ae67bde4f6 updated. Details: {u'admin_state_up': True, u'network_id': u'15b42697-cf68-4b78-9e19-2d167d0b37cc', u'segmentation_id': 5, u'physical_network': None, u'device': u'826251b8-cc26-435e-9488-16ae67bde4f6', u'port_id': u'826251b8-cc26-435e-9488-16ae67bde4f6', u'network_type': u'gre'}
2015-12-18 14:41:51.506 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Assigning 1 as local vlan for net-id=15b42697-cf68-4b78-9e19-2d167d0b37cc
2015-12-18 14:41:51.757 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [req-c53ce242-0dc1-41d2-9ab9-de88980dc3ab None] setup_tunnel_port: gre-0a052634 10.5.38.52 gre
2015-12-18 14:41:51.769 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Configuration for device 826251b8-cc26-435e-9488-16ae67bde4f6 completed.
2015-12-18 14:41:51.868 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] setup_tunnel_port: gre-0a052630 10.5.38.48 gre
2015-12-18 14:41:51.974 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] setup_tunnel_port: gre-0a052633 10.5.38.51 gre

but on a openvswitch-switch restart, this does not happen:

5-12-18 14:42:21.836 17767 ERROR neutron.agent.linux.ovsdb_monitor [-] Error received from ovsdb monitor: ovsdb-client: unix:/var/run/openvswitch/db.sock: receive failed (End of file)
2015-12-18 14:42:23.103 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Mapping physical network physnet1 to bridge br-data
2015-12-18 14:42:24.923 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Agent tunnel out of sync with plugin!
2015-12-18 14:42:25.188 17767 INFO neutron.agent.securitygroups_rpc [-] Preparing filters for devices set([u'826251b8-cc26-435e-9488-16ae67bde4f6'])
2015-12-18 14:42:25.664 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Port 826251b8-cc26-435e-9488-16ae67bde4f6 updated. Details: {u'admin_state_up': True, u'network_id': u'15b42697-cf68-4b78-9e19-2d167d0b37cc', u'segmentation_id': 5, u'physical_network': None, u'device': u'826251b8-cc26-435e-9488-16ae67bde4f6', u'port_id': u'826251b8-cc26-435e-9488-16ae67bde4f6', u'network_type': u'gre'}
2015-12-18 14:42:25.665 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Assigning 1 as local vlan for net-id=15b42697-cf68-4b78-9e19-2d167d0b37cc
2015-12-18 14:42:26.054 17767 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Configuration for device 826251b8-cc26-435e-9488-16ae67bde4f6 completed.