Thanks for a great release!
This release brought ieee80211r fast roaming to archer a7 v5 APs(ath79) and it just works.
Used "ct-htt" firmware, but didn't test others since this worked for me:
opkg remove wpad-basic ath10k-firmware-qca988x-ct && \
opkg install wpad-openssl ath10k-firmware-qca988x-ct-htt
Roaming configuration is simple, everything you need is on the shot below.
Choose your value for "Mobility Domain" and use it on all APs, select non-overlapping channels for each AP (not pictured)
Same in /etc/config/wireless
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'public name'
option key 'secret key'
option ft_psk_generate_local '1'
option ieee80211r '1'
option mobility_domain '1907'
option ft_over_ds '1'
option ieee80211w '1'
option encryption 'psk2+ccmp'