VMSS Aure R80.40 Routing issue

[ayb187]

Hello,

We are trying the solution VMSS in Azure,

after deploying the tempalte and doing the autoprovisiong, im not sure how to route the gateway subnet to the frontend Subnet using expressRoute since their is no VIP or External Loadbalancer with privateip, found nothing relatd to this in the documentation.

Architecture with adressing attached.

thank you