Comment 4 for bug 1557294

I am hitting the same issue with devstack, on Ubuntu 14.04. Is there are work around for this ??

World dumping... see /opt/stack/logs/worlddump-2016-03-25-042359.txt for details
ovs-ofctl: br-tun is not a bridge or a socket
ovs-ofctl: br-tun is not a bridge or a socket
==============================================

Here is my orginal local.conf:

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My local.conf:
[[local|localrc]]
# Default passwords
ADMIN_PASSWORD=pass12
MYSQL_PASSWORD=pass12
RABBIT_PASSWORD=pass12
SERVICE_PASSWORD=pass12
SERVICE_TOKEN=pass12
public_interface="eth2"

SCREEN_LOGDIR=/opt/stack/logs
HOST_IP=192.168.27.100
FLOATING_RANGE=172.24.4.0/24
 PUBLIC_INTERFACE=$public_interface
enable_plugin magnum https://git.openstack.org/openstack/magnum master

enable_plugin barbican https://git.openstack.org/openstack/barbican master
VOLUME_BACKING_FILE_SIZE=20G

disable_service n-net
enable_service q-svc
enable_service q-agt
enable_service q-dhcp
enable_service q-l3
enable_service q-meta
enable_service neutron
enable_service heat
enable_service h-api
enable_service h-api-cfn
enable_service h-api-cw
enable_service h-eng

# Disable security groups entirely
Q_USE_SECGROUP=False
LIBVIRT_FIREWALL_DRIVER=nova.virt.firewall.NoopFirewallDriver

disable_service tempest