title: How to route traffic from my Azure App Service to specific external IP address
body: <p>I'm trying to follow along with the guide found here:  <a href="https://docs.microsoft.com/en-us/azure/app-service-web/web-sites-integrate-with-vnet" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/azure/app-service-web/web-sites-integrate-with-vnet</a></p>
  
  <p>I have tried both connecting to an existing VNET and setting up a new VNET, but the results are the same.</p>
  
  <p>I have an existing VNET that connects to an external partner service.  When I connect a VM to the VNET, I am able to telnet into the external partner's IP:port.  When I connect the azure app service to that same VNET, I am unable to get the traffic to route to that external partner service.</p>
  
  <p>From the guide, it looks like I should be able to just add IP address range to the App Service Plan's Networking configuration as seen in this image from the linked article.</p>
  
  <p><a href="https://i.stack.imgur.com/ejgKn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ejgKn.png" alt="IP Addresses routed to VNET include text boxes"></a></p>
  
  <p>When I go into my App Service Plan's Networking configuration, I have no option to add more IP addresses.</p>
  
  <p><a href="https://i.stack.imgur.com/2VNzU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2VNzU.png" alt="My App Service Plan&#39;s Networking configuration"></a></p>
  
  <p>When I look at the App Service directly (not the plan), I see that there are some default routes (not sure where those come from).</p>
  
  <p><a href="https://i.stack.imgur.com/Ebq37.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ebq37.png" alt="App Service Plan network configuration"></a></p>
  
  <p>I tried adding a User Defined Route to the route table associated with the subnet, but that did not appear in the IP Addresses Routed To VNET.</p>
  
  <p>The address range listed in the Site-to-Site address space is the range that I need forwarded.</p>