(I have a TL-WPA7817, which is not an option in the Model dropdown)

I just received my TL-WPA7817, got it installed and it works.  There is not an option in the firmware web page for 802.11r. My home router is running OpenWrt and am very happy with it. It does have a option for 802.11r, so I'd like to get these devices talking together for Fast Roaming.

Is there some option for that that I just do not see?  Do I need to ssh into this router then?

Thank you.