diff --git a/.defaults.sh b/.defaults.sh
index b417118..e73009b 100644
--- a/.defaults.sh
+++ b/.defaults.sh
@@ -54,6 +54,9 @@ export CLUSTER_NAME="ocp4"
 # -d, --cluster-domain DOMAIN
 export BASE_DOM="local"
 
+# -t, --network-type TYPE
+export NETWORK_TYPE="OpenShiftSDN"
+
 # -z, --dns-dir DIR
 export DNS_DIR="/etc/NetworkManager/dnsmasq.d"
 
diff --git a/.install_scripts/download_prepare.sh b/.install_scripts/download_prepare.sh
index 718a7c8..742e54d 100644
--- a/.install_scripts/download_prepare.sh
+++ b/.install_scripts/download_prepare.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-echo 
+echo
 echo "#####################################################"
 echo "### DOWNLOAD AND PREPARE OPENSHIFT 4 INSTALLATION ###"
 echo "#####################################################"
@@ -29,7 +29,7 @@ elif [ -f "${SSH_PUB_KEY_FILE}" ]; then
 else
     err "Unable to select SSH public key!"
 fi
-    
+
 
 echo -n "====> Downloading OCP Client: "; download get "$CLIENT" "$CLIENT_URL";
 echo -n "====> Downloading OCP Installer: "; download get "$INSTALLER" "$INSTALLER_URL";
@@ -73,7 +73,7 @@ networking:
   clusterNetworks:
   - cidr: 10.128.0.0/14
     hostPrefix: 23
-  networkType: OpenShiftSDN
+  networkType: ${NETWORK_TYPE}
   serviceNetwork:
   - 172.30.0.0/16
 platform:
diff --git a/.install_scripts/process_args.sh b/.install_scripts/process_args.sh
index 6987371..024ea93 100644
--- a/.install_scripts/process_args.sh
+++ b/.install_scripts/process_args.sh
@@ -52,6 +52,11 @@ case $key in
     shift
     shift
     ;;
+    -t|--network-type)
+    export NETWORK_TYPE="$2"
+    shift
+    shift
+    ;;
     -v|--vm-dir)
     export VM_DIR="$2"
     shift
diff --git a/.install_scripts/show_help.sh b/.install_scripts/show_help.sh
index 883e495..66c887b 100644
--- a/.install_scripts/show_help.sh
+++ b/.install_scripts/show_help.sh
@@ -31,6 +31,11 @@ Options:
     This will be used to populate .baseDomain in the install-config.yaml file that will be used to install the cluster.
     Default: ${BASE_DOM}
 
+-t, --network-type TYPE
+    OpenShift 4 cluster network type.
+    This will be used to populate .networking.networkType in the install-config.yaml file that will be used to install the cluster.
+    Default: ${NETWORK_TYPE}
+
 -m, --masters N
     Number of master nodes to deploy.
     Default: ${N_MAST}
diff --git a/README.md b/README.md
index a49ec6c..2cf5cdd 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,7 @@
 | -p, --pull-secret FILE | Location of the pull secret file<br>Default: /root/pull-secret |
 | -c, --cluster-name NAME | OpenShift 4 cluster name<br>Default: ocp4 |
 | -d, --cluster-domain DOMAIN | OpenShift 4 cluster domain<br>Default: local |
+| -t, --network-type TYPE | OpenShift 4 cluster network type<br>Default: OpenShiftSDN |
 | -m, --masters N | Number of masters to deploy<br>Default: 3 |
 | -w, --worker N | Number of workers to deploy<br>Default: 2 |
 | --master-cpu N | Number of CPUs for the master VM(s)<br>Default: 4 |
@@ -69,6 +70,10 @@
     ./ocp4_setup_upi_kvm.sh --ocp-version 4.2.stable --libvirt-oct 155
     ./ocp4_setup_upi_kvm.sh -O 4.2.stable -N 155
 
+    # Deploy OpenShift 4.15.stable with OVNKubernetes network type
+    ./ocp4_setup_upi_kvm.sh --ocp-version 4.15.stable --network-type OVNKubernetes
+    ./ocp4_setup_upi_kvm.sh -O 4.15.stable -t OVNKubernetes
+
     # Destory the already installed cluster
     ./ocp4_setup_upi_kvm.sh --cluster-name ocp43 --cluster-domain lab.test.com --destroy
     ./ocp4_setup_upi_kvm.sh -c ocp43 -d lab.test.com --destroy
@@ -158,7 +163,7 @@ for vm in $(virsh list --all --name --autostart | grep "<CLUSTER-NAME>"); do
 done
 ~~~
 
-Note: Replace `<CLUSTER-NAME>` with the cluster name or any matching string to filter out VMs that you want to set/un-set to be auto-started. 
+Note: Replace `<CLUSTER-NAME>` with the cluster name or any matching string to filter out VMs that you want to set/un-set to be auto-started.
 
 ___
 
@@ -177,7 +182,7 @@ When the bootstrap process is complete, the script waits for clusterversion to b
 ~~~
 
 ~~~
-====> Waiting for clusterversion: 
+====> Waiting for clusterversion:
   --> Working towards 4.3.12: 46% complete
   --> Unable to apply 4.3.12: an unknown error has occurred
   --> Working towards 4.3.12: 61% complete