802.11k - set up correctly?

Installing and Using OpenWrt Network and Wireless Configuration
#1

According to this article

https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-1/Enterprise-Mobility-8-1-Design-Guide/Enterprise_Mobility_8-1_Deployment_Guide/Chapter-11.html <-- Fig 11-9

and this

it seems all three Information Elements / Tags need to be present in the beacon frame to signify 802.11k is set up properly:

Country Element
Power Constraint Element
RM Enable Capabilities Element

I am trying to enable 802.11k by adding option ieee80211k '1' into /etc/config/wireless. With this, I check with Wireshark, and find only two of the three tags being broadcast by my routers.

The missing entry is the Power Constraint Element.

I then even tried to manipulate the /lib/netifd/hostapd.sh file to force add local_pwr_contraint=3 into hostapd.conf. It does get added and picked up by hostapd I believe (I see it in the hostapd.conf), and I was hoping this would somehow get the beacon frame to contain this "Power Constraint" tag, but nope, still nothing.

My questions are - is this Power Constraint Element even needed for 802.11k to be functional? And if yes, is there any way to make openwrt include this tag in the beacon frame?

Thanks.