Answer by eoghank for I am trying to run an all-in-one using stack.sh with the latest (folsom3 and master) branches of Quantum on KVM but the gateway interface does not get created and as a result VM's do not get an IP. I've updated the install to include the steps mentioned here http://wiki.openstack.org/RunningQuantumV2Api (http://wiki.openstack.org/RunningQuan...) and here http://wiki.openstack.org/QuantumDevstack (http://wiki.openstack.org/QuantumDevs...) but never get a gateway interface after creating a network and subnet and spinning up a VM. This is what ovs-vsctl displays (after creating a network and subnet and spinning up a VM: stack@esg-dell-c4-s11:~/devstack$ sudo ovs-vsctl show 5dab4e1c-89c4-421e-a737-03b338eddc1a Bridge br-int Port patch-tun Interface patch-tun type: patch options: {peer=patch-int} Port "tap73f2ee73-79" tag: 1 Interface "tap73f2ee73-79" type: internal Port "tapd425d955-15" tag: 2 Interface "tapd425d955-15" type: internal Port br-int Interface br-int type: internal Port "tapc46b72b3-b3" tag: 2 Interface "tapc46b72b3-b3" Bridge br-tun Port patch-int Interface patch-int type: patch options: {peer=patch-tun} Port br-tun Interface br-tun type: internal ovs_version: "1.4.0+build0" Are there any additional steps that need to be run to make this work with the V2 Quantum API? Eoghan

Looked back at the logs and think maybe this is what causes the problems (I am running Ubuntu 12.04). 2012-08-23 13:40:30 DEBUG [quantum.agent.linux.dhcp] Unable to access /opt/stack/data/dhcp/910bebe6-13a3-438c-a021-a217269d43b4/pid 2012-08-23 13:40:30 DEBUG [quantum.agent.linux.utils] Running command: sudo cat /proc/None/cmdline 2012-08-23 13:40:30 DEBUG [quantum.agent.linux.utils] Command: ['sudo', 'cat', '/proc/None/cmdline'] Exit code: 1 Stdout: '' Stderr: 'cat: /proc/None/cmdline: No such file or directory\n' ............................. 2012-08-23 13:40:30 DEBUG [quantum.agent.linux.utils] Running command: sudo ip netns exec 910bebe6-13a3-438c-a021-a217269d43b4 ip -o link show tape9e2be92-ca 2012-08-23 13:40:30 DEBUG [quantum.agent.linux.utils] Command: ['sudo', 'ip', 'netns', 'exec', '910bebe6-13a3-438c-a021-a217269d43b4', 'ip', '-o', 'link', 'show', 'tape9e2be92-ca'] Exit code: 1 Stdout: '' Stderr: 'Cannot open network namespace: No such file or directory\n'