I have a customer wanting to use an IP address for a Frontdoor backend pool entry located on an on-premise machine via a VPN.
They would like to be able to run some virtual machines in on premises as part of a backend pool for an Azure Frontdoor. These machines will be running the same application software as on the Azure Virtual machines also part of the same backend pool, but as part of a software migration they would like to have them be part of the frontdoor backend pool. They will be connected to a virtual network in azure via an IPSec IKE S2S VPN Tunnel.
I understand that AFD supports both Azure and non-Azure resources in the backend pool and this can be done only using public IP addresses via custom host: https://docs.microsoft.com/en-us/azure/frontdoor/front-door-backend-pool#backends
But I cannot find information regarding backend pool VMs being split between on-prem and in Azure. Is this combination possible?if so, how can it be achieved?
Thanks in advance,
Almudena