Set network to ipv6-only, both internal and external

Author: shaun-nx

.github/workflows/nfr.yml

@@ -105,7 +105,8 @@ jobs:
           echo "GKE_NODES_SERVICE_ACCOUNT=${{ secrets.GKE_NODES_SERVICE_ACCOUNT }}" >> vars.env
           echo "NETWORK_TAGS=nfr-tests-${{ github.run_id }}-${{ matrix.type }}" >> vars.env
           echo "NGF_BRANCH=${{ github.ref_name }}" >> vars.env
-          echo "SOURCE_IP_RANGE=$(curl -sS -4 icanhazip.com)/32" >> vars.env
+          echo "SOURCE_IP_RANGE=$(curl -sS -6 icanhazip.com)/128" >> vars.env
+          # echo "SOURCE_IPv6_RANGE=$(curl -sS -6 icanhazip.com)/128" >> vars.env
           echo "ADD_VM_IP_AUTH_NETWORKS=true" >> vars.env
           echo "PLUS_ENABLED=${{ matrix.type == 'plus' }}" >> vars.env
           echo "GINKGO_LABEL=" >> vars.env

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

@@ -25,9 +25,14 @@ if [ "${IPV6_ENABLED}" = "true" ]; then
     #     --region=${GKE_CLUSTER_REGION} \
     #     --range=10.120.0.0/14
 
-    NETWORK="us-ipv4-ipv6"
-    # NETWORK_TIER="ipv6-network-tier=PREMIUM" # This will work only if STACK_TYPE is IPV6_ONLY
-    STACK_TYPE="IPV4_IPV6"
+    # Dual-Stack Settings
+    # NETWORK="us-ipv4-ipv6"
+    # STACK_TYPE="IPV4_IPV6"
+
+    # IPv6 Only Settings
+    NETWORK="ipv6-only" 
+    NETWORK_TIER="ipv6-network-tier=PREMIUM" # This will work only if STACK_TYPE is IPV6_ONLY
+    STACK_TYPE="IPV6_ONLY"
 fi
 
 gcloud compute firewall-rules create "${RESOURCE_NAME}" \
@@ -49,8 +54,12 @@ gcloud compute instances create "${RESOURCE_NAME}" --project="${GKE_PROJECT}" --
 # Add VM IP to GKE master control node access, if required
 if [ "${ADD_VM_IP_AUTH_NETWORKS}" = "true" ]; then
 
+    # EXTERNAL_IP=$(gcloud compute instances describe "${RESOURCE_NAME}" --project="${GKE_PROJECT}" --zone="${GKE_CLUSTER_ZONE}" \
+    #     --format='value(networkInterfaces[0].accessConfigs[0].natIP)')
+
+    echo "IPv6 is enabled, fetching the external IPv6 address"
     EXTERNAL_IP=$(gcloud compute instances describe "${RESOURCE_NAME}" --project="${GKE_PROJECT}" --zone="${GKE_CLUSTER_ZONE}" \
-        --format='value(networkInterfaces[0].accessConfigs[0].natIP)')
+        --format='value(networkInterfaces[0].ipv6AccessConfigs[0].externalIpv6)')
 
     echo "External IP of the VM is: ${EXTERNAL_IP}"