diff --git a/jenkins/jobs/devstack-gate.yaml b/jenkins/jobs/devstack-gate.yaml
index d9dce59c49..0853ba37b9 100644
--- a/jenkins/jobs/devstack-gate.yaml
+++ b/jenkins/jobs/devstack-gate.yaml
@@ -471,7 +471,12 @@
           fi
           # For feature/qos branch, actually enable qos service plugin
           if [[ "$BRANCH_OVERRIDE" =~ ^feature/qos$ ]] || [[ "$ZUUL_BRANCH" =~ ^feature/qos$ ]] ; then
+              # enable qos service plugin
               export DEVSTACK_LOCAL_CONFIG="Q_SERVICE_PLUGIN_CLASSES=qos"
+              # also enable qos ml2 extension driver
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"[[post-config|/\$Q_PLUGIN_CONF_FILE]]"
+              # port_security is enabled by default
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"extension_drivers = port_security,qos"
           fi
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
           ./safe-devstack-vm-gate-wrap.sh
@@ -1121,7 +1126,12 @@
           fi
           # For feature/qos branch, actually enable qos service plugin
           if [[ "$BRANCH_OVERRIDE" =~ ^feature/qos$ ]] || [[ "$ZUUL_BRANCH" =~ ^feature/qos$ ]] ; then
+              # enable qos service plugin
               export DEVSTACK_LOCAL_CONFIG="Q_SERVICE_PLUGIN_CLASSES=qos"
+              # also enable qos ml2 extension driver
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"[[post-config|/\$Q_PLUGIN_CONF_FILE]]"
+              # port_security is enabled by default
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"extension_drivers = port_security,qos"
           fi
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
           ./safe-devstack-vm-gate-wrap.sh
diff --git a/jenkins/jobs/neutron.yaml b/jenkins/jobs/neutron.yaml
index b260a9799c..923c736036 100644
--- a/jenkins/jobs/neutron.yaml
+++ b/jenkins/jobs/neutron.yaml
@@ -26,7 +26,12 @@
           fi
           # For feature/qos branch, actually enable qos service plugin
           if [[ "$BRANCH_OVERRIDE" =~ ^feature/qos$ ]] || [[ "$ZUUL_BRANCH" =~ ^feature/qos$ ]] ; then
+              # enable qos service plugin
               export DEVSTACK_LOCAL_CONFIG="Q_SERVICE_PLUGIN_CLASSES=qos"
+              # also enable qos ml2 extension driver
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"[[post-config|/\$Q_PLUGIN_CONF_FILE]]"
+              # port_security is enabled by default
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"extension_drivers = port_security,qos"
           fi
 
           function gate_hook {{
@@ -81,7 +86,12 @@
           fi
           # For feature/qos branch, actually enable qos service plugin
           if [[ "$BRANCH_OVERRIDE" =~ ^feature/qos$ ]] || [[ "$ZUUL_BRANCH" =~ ^feature/qos$ ]] ; then
+              # enable qos service plugin
               export DEVSTACK_LOCAL_CONFIG="Q_SERVICE_PLUGIN_CLASSES=qos"
+              # also enable qos ml2 extension driver
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"[[post-config|/\$Q_PLUGIN_CONF_FILE]]"
+              # port_security is enabled by default
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"extension_drivers = port_security,qos"
           fi
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
           ./safe-devstack-vm-gate-wrap.sh
@@ -266,7 +276,12 @@
           fi
           # For feature/qos branch, actually enable qos service plugin
           if [[ "$BRANCH_OVERRIDE" =~ ^feature/qos$ ]] || [[ "$ZUUL_BRANCH" =~ ^feature/qos$ ]] ; then
-              export DEVSTACK_LOCAL_CONFIG+="Q_SERVICE_PLUGIN_CLASSES=qos"
+              # enable qos service plugin
+              export DEVSTACK_LOCAL_CONFIG="Q_SERVICE_PLUGIN_CLASSES=qos"
+              # also enable qos ml2 extension driver
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"[[post-config|/\$Q_PLUGIN_CONF_FILE]]"
+              # port_security is enabled by default
+              export DEVSTACK_LOCAL_CONFIG+=$'\n'"extension_drivers = port_security,qos"
           fi
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh
           ./safe-devstack-vm-gate-wrap.sh