Mesmo que mostre esta mensagem, parece estar funcionando para mim ...
sudo hostapd thirdParty/hostapd-test.conf
Configuration file: thirdParty/hostapd-test.conf
Failed to update rate sets in kernel module
Using interface wlan0 with hwaddr 00:25:d3:64:49:35 and ssid 'test'
wlan0: STA f8:0c:f3:5e:a1:14 IEEE 802.11: authenticated
wlan0: STA f8:0c:f3:5e:a1:14 IEEE 802.11: associated (aid 1)
wlan0: AP-STA-CONNECTED f8:0c:f3:5e:a1:14
wlan0: STA f8:0c:f3:5e:a1:14 RADIUS: starting accounting session 529118DC-00000000
e trabalhou para mim com este tuto: aqui