Use pre-assigned dual stack network v4-v6

Author: shaun-nx

tests/scripts/cleanup-vm.sh

@@ -18,7 +18,7 @@ gcloud compute instances delete "${RESOURCE_NAME}" --quiet --project="${GKE_PROJ
 gcloud compute firewall-rules delete "${RESOURCE_NAME}" --quiet --project="${GKE_PROJECT}" || true
 
 # Clean up the custom network and subnet if IPv6 was enabled
-if [ "${IPV6_ENABLED}" = "true" ]; then
-    gcloud compute networks subnets delete ${RESOURCE_NAME} --region=${GKE_CLUSTER_REGION} --quiet || true
-    gcloud compute networks delete ${RESOURCE_NAME} --quiet || true
-fi
+# if [ "${IPV6_ENABLED}" = "true" ]; then
+#     gcloud compute networks subnets delete ${RESOURCE_NAME} --region=${GKE_CLUSTER_REGION} --quiet || true
+#     gcloud compute networks delete ${RESOURCE_NAME} --quiet || true
+# fi

tests/scripts/create-and-setup-gcp-vm.sh

@@ -15,17 +15,9 @@ source scripts/vars.env
 # Create custom network and subnet if IPv6 is enabled
 # For IPv6, we create a dual-stack subnet with internal IPv6 addresses and external IPv4 addresses
 if [ "${IPV6_ENABLED}" = "true" ]; then
-    echo "Creating IPv6 Network interface for the GKE cluster"
-    gcloud compute networks create ${RESOURCE_NAME} --subnet-mode=custom --quiet # The --subnet-mode=custom flag allows us to create custom subnets
-    
-    gcloud compute networks subnets create ${RESOURCE_NAME} \
-        --network=${RESOURCE_NAME} \
-        --stack-type=IPV4_IPV6 \
-        --ipv6-access-type=INTERNAL \
-        --region=${GKE_CLUSTER_REGION} \
-        --range=10.120.0.0/14
-
-    NETWORK=${RESOURCE_NAME}
+    echo "Using IPv6 Network interface for the GKE cluster"
+
+    NETWORK="v4-v6"
     NETWORK_TIER="ipv6-network-tier=PREMIUM"
     STACK_TYPE="IPV4_IPV6"
 fi