I am trying to setup openstack with the use of Ubuntu 12.04 Guide and I have created 3 nodes in Virtual Box 1) Controller (10.0.0.11) 2) Compute (10.0.0.31) 3) Network Network Node's IP Address is 10.0.0.21.

What is INSTANCE_TUNNELS_INTERFACE_IP_ADDRESS? Which IP should be set in this parameter?

There was a step Add a port to the external bridge that connects to the physical external network interface: where I used ovs-vsctl add-port br-ex eth5 (eth5 IP address is 10.0.0.21)

then I did ethtool -K eth5 gro off

After Open vSwitch (OVS) service configuration when I completed "To finalize the installation" network of the node is not working.

I am not able to ping Network Node from Controller or Compute node