Is there an extension needed or is this a recent addition? I've spent way too long reconfiguring yubikeys to act as an OTP device so that they work over RDP.

Is there an extension needed or is this a recent addition? I've spent way too long reconfiguring yubikeys to act as an OTP device so that they work over RDP. (edit: reconfiguration is needed to capture the device ID/secret and get them registered to our MFA provider as an OTP token, I realize they do OTP OOB :) )