I'm experiencing an issue where my Azure Function App shows different NAT Gateway configurations in different sections of the Azure portal. - In the Networking section of the Function App, the NAT Gateway is displayed as correctly configured (see screenshot 1). However, in the Virtual Network Integration settings, the NAT Gateway is shown as "None" (see screenshot 2). I’ve refreshed the portal, reattached the NAT Gateway, and ensured all configurations are correct. Has anyone encountered this issue before? Could this be a portal glitch, or is there something I might be missing? Any insights or suggestions would be greatly appreciated!

Hi @Niket Kumar Singh , I understand that you've followed all recommended configuration to have Azure Function Apps (Elastic Premium EP1) integrated with vnet and NAT Gateway. However, you noticed that: Networking section in Function Apps correctly show the NAT Gateway Virtual Network Integration settings, the NAT Gateway is shown as "None", which is incorrect I'd suggest you give feedback to us: in the upper right corner next to your profile, click on the "Send feedback to Microsoft" button and submit your feedback. Thank you for your contribution to make Azure Portal better.

Discrepancy in Azure Function App NAT Gateway Configuration

Niket Kumar Singh 360

I'm experiencing an issue where my Azure Function App shows different NAT Gateway configurations in different sections of the Azure portal. - In the Networking section of the Function App, the NAT Gateway is displayed as correctly configured (see screenshot 1).
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However, in the Virtual Network Integration settings, the NAT Gateway is shown as "None" (see screenshot 2).

I’ve refreshed the portal, reattached the NAT Gateway, and ensured all configurations are correct. Has anyone encountered this issue before? Could this be a portal glitch, or is there something I might be missing?

Any insights or suggestions would be greatly appreciated!

Silvia Wibowo 3,821 Reputation points Microsoft Employee

2024-08-26T00:53:55.7866667+00:00

Hi @Niket Kumar Singh , what hosting plan do you use for your Function App: Flex Consumption, Premium, Dedicated (App Service Plan / App Service Environment), or Container Apps?
Niket Kumar Singh 360 Reputation points

2024-08-26T03:53:48.1766667+00:00

Hi @Silvia Wibowo

Thank you for your response.
it's App Service Plan : Elastic Premium EP1, any recommendation why this Discrepancy.
Silvia Wibowo 3,821 Reputation points Microsoft Employee

2024-08-27T02:24:46.7+00:00
Hi @Niket Kumar Singh , please follow Configure NAT gateway integration steps, specifically:

Ensure that Route All is enabled for your virtual network integration, so routes in your virtual network affect the internet-bound traffic.
Niket Kumar Singh 360 Reputation points

2024-08-27T06:23:40.9+00:00

Hi @Silvia Wibowo

Already we have added this in application setting: The function app can now access the virtual network. When connectivity is enabled, the vnetrouteallenabled site setting is set to 1. You must have either this site setting or the legacy WEBSITE_VNET_ROUTE_ALL application setting set to 1.

and as per the documentaion we can't see this option of route all in the :App Service > Networking. In the Outbound Traffic section, select Virtual network integration. Ensure that your app is integrated with a subnet and that Route All is enabled.

but the other option avaible there is :

please guide me why Azure Function App shows different NAT Gateway configurations in different sections of the Azure portal?

Accepted answer

Silvia Wibowo 3,821 Reputation points Microsoft Employee

2024-08-27T22:57:06.2933333+00:00
Hi @Niket Kumar Singh , I understand that you've followed all recommended configuration to have Azure Function Apps (Elastic Premium EP1) integrated with vnet and NAT Gateway. However, you noticed that:

Networking section in Function Apps correctly show the NAT Gateway

Virtual Network Integration settings, the NAT Gateway is shown as "None", which is incorrect

I'd suggest you give feedback to us: in the upper right corner next to your profile, click on the "Send feedback to Microsoft" button and submit your feedback. Thank you for your contribution to make Azure Portal better.
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