Nokia 7750wifi network aggregation working with Mikrotik

Hello to all,

I´m working with a ISP that uses Nokia 7750 as Wireless LAN gateway for Wi-Fi network aggregation. The strategy is to test mikrotik Access Points with this platform to delivery in a mass-market in future.

We try to understand if we can use softGRE or L2TPv3?
The DHCP-Relay option 82 with Remote-ID=CPE MAC and Circuit-ID=SSID

Does anyone have a similar setup or experience with this scenario?

Thanks for your help and support
Best Regards