In development – Expanded VPN Gateway interoperability

We're expanding support for the VPN Gateway to allow Azure Stack users greater flexibility with their settings. Once available, this will allow users to configure their own settings so that they can establish a VPN tunnel with the older devices they have in their datacenter, without requiring them to upgrade these devices.

This update applies primarily to Azure Stack users.

Learn more about Azure Stack networking.

See more about Azure Stack roles and responsibilities.

Source: Azure Roadmap