fix

samples/manage/azure-sql-db-managed-instance/attach-vpn-gateway/attachVPNGateway.ps1

@@ -81,6 +81,22 @@ function Load-ResourceGroup {
     }
 }
 
+function Set-VirtualNetwork
+{
+    param($virtualNetwork)
+
+    Write-Host "Applying changes to the virtual network."
+    Try
+    {
+        Set-AzureRmVirtualNetwork -VirtualNetwork $virtualNetwork -ErrorAction Stop | Out-Null
+    }
+    Catch
+    {
+        Write-Host "Failed: $_" -ForegroundColor Red
+    }
+
+}
+
 function ConvertCidrToUint32Array
 {
     param($cidrRange)
@@ -166,6 +182,9 @@ $gatewaySubnetPrefix = CalculateNextAddressPrefix $virtualNetwork 28
 
 $vpnClientAddressPoolPrefix = CalculateVpnClientAddressPoolPrefix $gatewaySubnetPrefix
 
+$virtualNetwork.AddressSpace.AddressPrefixes.Add($gatewaySubnetPrefix)
+Add-AzureRmVirtualNetworkSubnetConfig -Name GatewaySubnet -VirtualNetwork $virtualNetwork -AddressPrefix $gatewaySubnetPrefix | Out-Null
+
 Write-Host
 
 # Start the deployment

samples/manage/azure-sql-db-managed-instance/attach-vpn-gateway/azuredeploy.json

@@ -42,27 +42,6 @@
         "clientRootCertName": "RootCert"
     },
     "resources": [
-        {
-            "name": "[parameters('virtualNetworkName')]",
-            "type": "Microsoft.Network/virtualNetworks",
-            "apiVersion": "2018-02-01",
-            "location": "[parameters('location')]",
-            "properties": {
-                "addressSpace": {
-                    "addressPrefixes": [
-                        "[parameters('gatewaySubnetPrefix')]"
-                    ]
-                },
-                "subnets": [
-                    {
-                        "name": "[variables('gatewaySubnetName')]",
-                        "properties": {
-                            "addressPrefix": "[parameters('gatewaySubnetPrefix')]"
-                        }
-                    }
-                ]
-            }
-        },
         {
             "apiVersion": "2017-10-01",
             "type": "Microsoft.Network/publicIPAddresses",
@@ -78,8 +57,7 @@
             "name": "[variables('gatewayName')]",
             "location": "[resourceGroup().location]",
             "dependsOn": [
-                "[concat('Microsoft.Network/publicIPAddresses/', variables('gatewayPublicIpAddressName'))]",
-                "[concat('Microsoft.Network/virtualNetworks/', parameters('virtualNetworkName'))]"
+                "[concat('Microsoft.Network/publicIPAddresses/', variables('gatewayPublicIpAddressName'))]"
             ],
             "properties": {
                 "ipConfigurations": [