Replaces MicrosoftDocs/azure-docs-pr#222426

Author: ggailey777

articles/azure-functions/functions-app-settings.md

@@ -655,7 +655,7 @@ Indicates whether to use a specific [cold start](event-driven-scaling.md#cold-st
 ## WEBSITE\_VNET\_ROUTE\_ALL
 
 > [!IMPORTANT]
-> WEBSITE_VNET_ROUTE_ALL is a legacy app setting that has been replaced by the [vnetRouteAllEnabled configuration setting](../app-service/configure-vnet-integration-routing.md).
+> WEBSITE_VNET_ROUTE_ALL is a legacy app setting that has been replaced by the [vnetRouteAllEnabled](#vnetrouteallenabled) site setting.
 
 Indicates whether all outbound traffic from the app is routed through the virtual network. A setting value of `1` indicates that all traffic is routed through the virtual network. You need this setting when using features of [Regional virtual network integration](functions-networking-options.md#regional-virtual-network-integration). It's also used when a [virtual network NAT gateway is used to define a static outbound IP address](functions-how-to-use-nat-gateway.md).
 
@@ -704,6 +704,12 @@ Sets the specific version of PowerShell on which your functions run. For more in
 
 When running locally, you instead use the [`FUNCTIONS_WORKER_RUNTIME_VERSION`](functions-reference-powershell.md#running-local-on-a-specific-version) setting in the local.settings.json file. 
 
+### vnetrouteallenabled
+
+Indicates whether all outbound traffic from the app is routed through the virtual network. A setting value of `1` indicates that all traffic is routed through the virtual network. You need this setting when using features of [Regional virtual network integration](functions-networking-options.md#regional-virtual-network-integration). It's also used when a [virtual network NAT gateway is used to define a static outbound IP address](functions-how-to-use-nat-gateway.md). For more information, see [Configure application routing](../app-service/configure-vnet-integration-routing.md#configure-application-routing).
+
+This site setting replaces the legacy [WEBSITE\_VNET\_ROUTE\_ALL](#website_vnet_route_all) setting.
+
 ## Next steps
 
 [Learn how to update app settings](functions-how-to-use-azure-function-app-settings.md#settings)

articles/azure-functions/functions-how-to-use-nat-gateway.md

@@ -95,7 +95,9 @@ You can now connect your function app to the virtual network.
 
 1. Select **OK** to add the subnet. Close the **VNet Integration** and **Network Feature Status** pages to return to your function app page.
 
-The function app can now access the virtual network. Next, you'll add an HTTP-triggered function to the function app.
+The function app can now access the virtual network. When connectivity is enable, the vnetrouteallenabled site setting is set to `1`. You must have either this site setting or the legacy [WEBSITE_VNET_ROUTE_ALL](./functions-app-settings.md#website_vnet_route_all) application setting set to `1`.
+
+Next, you'll add an HTTP-triggered function to the function app. 
 
 ## <a name="create-function"></a>Create an HTTP trigger function