diff --git a/devstack/upgrade/resources.sh b/devstack/upgrade/resources.sh
index ef26e67fc7..80a5463897 100755
--- a/devstack/upgrade/resources.sh
+++ b/devstack/upgrade/resources.sh
@@ -33,6 +33,11 @@ set -o xtrace
 
 
 function early_create {
+    # We need these steps only in case of flat-network
+    if [[ -n "${IRONIC_PROVISION_NETWORK_NAME}" ]]; then
+        return
+    fi
+
     # Ironic needs to have network access to the instance during deployment
     # from the control plane (ironic-conductor). This 'early_create' function
     # creates a new network with a unique CIDR, adds a route to this network
@@ -98,6 +103,11 @@ function verify_noapi {
 }
 
 function destroy {
+    # We need these steps only in case of flat-network
+    if [[ -n "${IRONIC_PROVISION_NETWORK_NAME}" ]]; then
+        return
+    fi
+
     # NOTE(vsaienko) move ironic VMs back to private network.
     local net_id
     net_id=$(openstack network show private -f value -c id)
diff --git a/devstack/upgrade/upgrade.sh b/devstack/upgrade/upgrade.sh
index 1bc00deea2..7820a54226 100755
--- a/devstack/upgrade/upgrade.sh
+++ b/devstack/upgrade/upgrade.sh
@@ -86,11 +86,14 @@ start_nova_compute
 ensure_services_started ironic-api ironic-conductor
 ensure_logs_exist ir-cond ir-api
 
+# We need these steps only in case of flat-network
 # NOTE(vsaienko) starting from Ocata when Neutron is restarted there is no guarantee that
 # internal tag, that was assigned to network will be the same. As result we need to update
 # tag on link between br-int and brbm to new value after restart.
-net_id=$(openstack network show ironic_grenade -f value -c id)
-create_ovs_taps $net_id
+if [[ -z "${IRONIC_PROVISION_NETWORK_NAME}" ]]; then
+    net_id=$(openstack network show ironic_grenade -f value -c id)
+    create_ovs_taps $net_id
+fi
 
 set +o xtrace
 echo "*********************************************************************"