diff --git a/k8s/workspace/update-openstack-resources.sh b/k8s/workspace/update-openstack-resources.sh
index 75d1216..e292bda 100644
--- a/k8s/workspace/update-openstack-resources.sh
+++ b/k8s/workspace/update-openstack-resources.sh
@@ -50,6 +50,17 @@
 sed -i "s/volume_type_name/${TEMPEST_CUSTOM_VOLUME_TYPE}/g" $MY_PROJFOLDER/yamls/tempest_custom.yaml
 echo " "
 
+echo "# Checking Neutron global physnet mtu value"
+global_physnet_mtu=""
+global_physnet_mtu=$(kubectl get osdpl -A -o wide -o yaml | grep global_physnet_mtu | tail -n1 | cut -d':' -f2 | tr -d ' ')
+if [ -n "$global_physnet_mtu" ]; then
+    echo "global_physnet_mtu is set to: $global_physnet_mtu"
+    cat <<EOF >> $MY_PROJFOLDER/yamls/tempest_custom.yaml
+neutron_plugin_options:
+    max_mtu: $global_physnet_mtu
+EOF
+fi
+
 echo "# Updating SPT global_config.yaml"
 cp -v /opt/res-files/k8s/yamls/spt_global_config.yaml.clean $MY_PROJFOLDER/yamls/global_config.yaml
 echo "# image_ref_name -> ${ubuntu20_name}"
diff --git a/k8s/yamls/tempest_custom.yaml.clean b/k8s/yamls/tempest_custom.yaml.clean
index 5db71af..6a65e4f 100644
--- a/k8s/yamls/tempest_custom.yaml.clean
+++ b/k8s/yamls/tempest_custom.yaml.clean
@@ -7,7 +7,6 @@
     disable_ssl_certificate_validation: true
 compute:
     volume_device_name: vdb
-    compute_volume_common_az: nova
 heat_plugin:
     floating_network_name: public_net_name
     network_for_ssh: public_net_name
@@ -18,5 +17,4 @@
 network-feature-enabled:
     floating_ips: true
 volume:
-    volume_type: volume_type_name
-    volume_type_multiattach: volume_type_name
\ No newline at end of file
+    volume_type: volume_type_name
\ No newline at end of file