diff --git a/lib/baremetal b/lib/baremetal
index 52af420..f4d8589 100644
--- a/lib/baremetal
+++ b/lib/baremetal
@@ -449,8 +449,10 @@
        "$mac_1" \
        | grep ' id ' | get_field 2 )
     [ $? -eq 0 ] || [ "$id" ] || die $LINENO "Error adding baremetal node"
-    id2=$(nova baremetal-interface-add "$id" "$mac_2" )
-    [ $? -eq 0 ] || [ "$id2" ] || die $LINENO "Error adding interface to barmetal node $id"
+    if [ -n "$mac_2" ]; then
+        id2=$(nova baremetal-interface-add "$id" "$mac_2" )
+        [ $? -eq 0 ] || [ "$id2" ] || die $LINENO "Error adding interface to barmetal node $id"
+    fi
 }
 
 
diff --git a/lib/ceilometer b/lib/ceilometer
index 1b04319..cd4c4d8 100644
--- a/lib/ceilometer
+++ b/lib/ceilometer
@@ -134,12 +134,12 @@
 
 # start_ceilometer() - Start running processes, including screen
 function start_ceilometer() {
-    screen_it ceilometer-acompute "sg $LIBVIRT_GROUP \"ceilometer-agent-compute --config-file $CEILOMETER_CONF\""
-    screen_it ceilometer-acentral "ceilometer-agent-central --config-file $CEILOMETER_CONF"
-    screen_it ceilometer-collector "ceilometer-collector --config-file $CEILOMETER_CONF"
-    screen_it ceilometer-api "ceilometer-api -d -v --log-dir=$CEILOMETER_API_LOG_DIR --config-file $CEILOMETER_CONF"
-    screen_it ceilometer-alarm-notifier "ceilometer-alarm-notifier --config-file $CEILOMETER_CONF"
-    screen_it ceilometer-alarm-evaluator "ceilometer-alarm-evaluator --config-file $CEILOMETER_CONF"
+    screen_it ceilometer-acompute "cd ; sg $LIBVIRT_GROUP \"ceilometer-agent-compute --config-file $CEILOMETER_CONF\""
+    screen_it ceilometer-acentral "cd ; ceilometer-agent-central --config-file $CEILOMETER_CONF"
+    screen_it ceilometer-collector "cd ; ceilometer-collector --config-file $CEILOMETER_CONF"
+    screen_it ceilometer-api "cd ; ceilometer-api -d -v --log-dir=$CEILOMETER_API_LOG_DIR --config-file $CEILOMETER_CONF"
+    screen_it ceilometer-alarm-notifier "cd ; ceilometer-alarm-notifier --config-file $CEILOMETER_CONF"
+    screen_it ceilometer-alarm-evaluator "cd ; ceilometer-alarm-evaluator --config-file $CEILOMETER_CONF"
 }
 
 # stop_ceilometer() - Stop running processes
diff --git a/lib/neutron_thirdparty/nicira b/lib/neutron_thirdparty/nicira
index 5a20934..3f2a5af 100644
--- a/lib/neutron_thirdparty/nicira
+++ b/lib/neutron_thirdparty/nicira
@@ -18,22 +18,38 @@
 # to an network that allows it to talk to the gateway for
 # testing purposes
 NVP_GATEWAY_NETWORK_INTERFACE=${NVP_GATEWAY_NETWORK_INTERFACE:-eth2}
+# Re-declare floating range as it's needed also in stop_nicira, which
+# is invoked by unstack.sh
+FLOATING_RANGE=${FLOATING_RANGE:-172.24.4.224/28}
 
 function configure_nicira() {
     :
 }
 
 function init_nicira() {
-    die_if_not_set $LINENO NVP_GATEWAY_NETWORK_CIDR "Please, specify CIDR for the gateway network interface."
+    if ! is_set NVP_GATEWAY_NETWORK_CIDR; then
+        NVP_GATEWAY_NETWORK_CIDR=$PUBLIC_NETWORK_GATEWAY/${FLOATING_RANGE#*/}
+        echo "The IP address to set on br-ex was not specified. "
+        echo "Defaulting to "$NVP_GATEWAY_NETWORK_CIDR
+    fi
     # Make sure the interface is up, but not configured
-    sudo ifconfig $NVP_GATEWAY_NETWORK_INTERFACE up
+    sudo ip link dev $NVP_GATEWAY_NETWORK_INTERFACE set up
+    # Save and then flush the IP addresses on the interface
+    addresses=$(ip addr show dev $NVP_GATEWAY_NETWORK_INTERFACE | grep inet | awk {'print $2'})
     sudo ip addr flush $NVP_GATEWAY_NETWORK_INTERFACE
     # Use the PUBLIC Bridge to route traffic to the NVP gateway
     # NOTE(armando-migliaccio): if running in a nested environment this will work
     # only with mac learning enabled, portsecurity and security profiles disabled
+    # The public bridge might not exist for the NVP plugin if Q_USE_DEBUG_COMMAND is off
+    # Try to create it anyway
+    sudo ovs-vsctl --no-wait -- --may-exist add-br $PUBLIC_BRIDGE
     sudo ovs-vsctl -- --may-exist add-port $PUBLIC_BRIDGE $NVP_GATEWAY_NETWORK_INTERFACE
     nvp_gw_net_if_mac=$(ip link show $NVP_GATEWAY_NETWORK_INTERFACE | awk '/ether/ {print $2}')
-    sudo ifconfig $PUBLIC_BRIDGE $NVP_GATEWAY_NETWORK_CIDR hw ether $nvp_gw_net_if_mac
+    sudo ip link dev $PUBLIC_BRIDGE set address $nvp_gw_net_if_mac
+    for address in $addresses; do
+        sudo ip addr add dev $PUBLIC_BRIDGE $address
+    done
+    sudo ip addr add dev $PUBLIC_BRIDGE $NVP_GATEWAY_NETWORK_CIDR
 }
 
 function install_nicira() {
@@ -45,7 +61,21 @@
 }
 
 function stop_nicira() {
-    :
+    if ! is_set NVP_GATEWAY_NETWORK_CIDR; then
+        NVP_GATEWAY_NETWORK_CIDR=$PUBLIC_NETWORK_GATEWAY/${FLOATING_RANGE#*/}
+        echo "The IP address expected on br-ex was not specified. "
+        echo "Defaulting to "$NVP_GATEWAY_NETWORK_CIDR
+    fi
+    sudo ip addr del $NVP_GATEWAY_NETWORK_CIDR dev $PUBLIC_BRIDGE
+    # Save and then flush remaining addresses on the interface
+    addresses=$(ip addr show dev $PUBLIC_BRIDGE | grep inet | awk {'print $2'})
+    sudo ip addr flush $PUBLIC_BRIDGE
+    # Try to detach physical interface from PUBLIC_BRIDGE
+    sudo ovs-vsctl del-port $NVP_GATEWAY_NETWORK_INTERFACE
+    # Restore addresses on NVP_GATEWAY_NETWORK_INTERFACE
+    for address in $addresses; do
+        sudo ip addr add dev $NVP_GATEWAY_NETWORK_INTERFACE $address
+    done
 }
 
 # Restore xtrace
diff --git a/lib/rpc_backend b/lib/rpc_backend
index 63edc07..44c1e44 100644
--- a/lib/rpc_backend
+++ b/lib/rpc_backend
@@ -63,7 +63,7 @@
     if is_service_enabled rabbit; then
         # Obliterate rabbitmq-server
         uninstall_package rabbitmq-server
-        sudo killall epmd
+        sudo killall epmd || sudo killall -9 epmd
         if is_ubuntu; then
             # And the Erlang runtime too
             sudo aptitude purge -y ~nerlang
@@ -86,10 +86,6 @@
         else
             exit_distro_not_supported "zeromq installation"
         fi
-
-        # Necessary directory for socket location.
-        sudo mkdir -p /var/run/openstack
-        sudo chown $STACK_USER /var/run/openstack
     fi
 }
 
diff --git a/lib/tempest b/lib/tempest
index bc0b18d..9f41608 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -266,7 +266,7 @@
     iniset $TEMPEST_CONF boto ssh_user ${DEFAULT_INSTANCE_USER:-cirros}
 
     # Orchestration test image
-    if [ $HEAT_CREATE_TEST_IMAGE == "True" ]; then
+    if [[ "$HEAT_CREATE_TEST_IMAGE" = "True" ]]; then
         disk_image_create /usr/share/tripleo-image-elements "vm fedora heat-cfntools" "i386" "fedora-vm-heat-cfntools-tempest"
         iniset $TEMPEST_CONF orchestration image_ref "fedora-vm-heat-cfntools-tempest"
     fi
diff --git a/tools/create-stack-user.sh b/tools/create-stack-user.sh
old mode 100644
new mode 100755