Open Stack

Hi
after a migration of Havana to IceHouse (using controller and network 
services/agents on the same physical node, and using OVS/GRE) we started 
facing some network-related problems (the internal tag of the element 
shown by ovs-vsctl show was set to 4095, which is wrong AFAIK). At the 
beginning the problems could be solved by just restarting the 
openvswitch related agents (and openvswitch itself), or changing the tag 
by hand; but now the networking definitely stopped working.

When we add a new router interface connected to a tenant lan, it is 
created in "DOWN" state. The in the openvswitch-agent.log we see this 
errore message:

2015-06-16 15:07:43.275 40708 WARNING 
neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Device 
ba295e45-9a73-48c1-8864-a59edd5855dc not defined on plugin

and nothing more.

Any suggestion ?

thanks,

     Alvise