Hello,

I am currently configuring OpenStack Kilo on one machine as follows:

• host -> Compute Node
• VM on host -> Network Node
• VM on host -> Controller Node

After following all the instructions in the install guide (OpenSUSE13.2) I receive an error when starting up an instance.

In the compute node logs it indicates: NovaException: Unexpected vif_type=binding_failed.

As far as I have been able to determine, this error appears to be triggered by an empty or undefined bridge_mappings for the ml2 plugin. However, the install guide does not specify a bridge_mappings entry for the compute node so it is unclear to me if that is intentional or missing when using the GRE tunnel configuration.

When I put in: bridge_mappings = external:br-tun

the instance boots but I am not sure if this is correct.

Any guidance appreciated.