HI,

is there any plan to add native support for GoogleAuth or FreeOTP or some other OTP client.
It would be great to auth VPN users and/or Router Access (Winbox, WEB etc..)

I guess it can be done via external Radius Server..
If someone has done it. Please share it would be helpful to others..

I think this could be useful:
https://www.freeipa.org/page/Using_Free ... S/RedHat_7

Main goal would be Mikrotik CCR as VPN Server - MS NPS with OTP to auth AD users with OTP for VPN

Havent found a free solution for Microsoft NPS server with OTP.

Don't it.
Exactly the way you described it. You can setup CCR vpn with radius. Radius checks password at FreeIPA. And FreeIPA has users and OTP