I have a logic app which requires to access a file which sits on on-prem server. for File System Connector, I have installed on-premise data gateway. It basically works. But I want to route traffic via Site-to-Site VPN which we have setup between on-prem and Azure
Expected Result: Route on-Premise Data Gateway traffic via Site-to-Site VPN or via Express route
You could use ISE. This capability is in public preview.
The Integration Service Environment is a deployment of the Logic Apps service into your own virtual network. This enables your logic apps to have direct access to resources over Site-to-site or ExpressRoute connections
For more references https://learn.microsoft.com/en-us/azure/logic-apps/connect-virtual-network-vnet-isolated-environment