root@OpenWrt:/var/run# cat ./hostapd-phy0.conf
ctrl_interface=/var/run/hostapd-phy0
driver=nl80211
wmm_ac_bk_cwmin=4
wmm_ac_bk_cwmax=10
wmm_ac_bk_aifs=7
wmm_ac_bk_txop_limit=0
wmm_ac_bk_acm=0
wmm_ac_be_aifs=3
wmm_ac_be_cwmin=4
wmm_ac_be_cwmax=10
wmm_ac_be_txop_limit=0
wmm_ac_be_acm=0
wmm_ac_vi_aifs=2
wmm_ac_vi_cwmin=3
wmm_ac_vi_cwmax=4
wmm_ac_vi_txop_limit=94
wmm_ac_vi_acm=0
wmm_ac_vo_aifs=2
wmm_ac_vo_cwmin=2
wmm_ac_vo_cwmax=3
wmm_ac_vo_txop_limit=47
wmm_ac_vo_acm=0
tx_queue_data3_aifs=7
tx_queue_data3_cwmin=15
tx_queue_data3_cwmax=1023
tx_queue_data3_burst=0
tx_queue_data2_aifs=3
tx_queue_data2_cwmin=15
tx_queue_data2_cwmax=63
tx_queue_data2_burst=0
tx_queue_data1_aifs=1
tx_queue_data1_cwmin=7
tx_queue_data1_cwmax=15
tx_queue_data1_burst=3.0
tx_queue_data0_aifs=1
tx_queue_data0_cwmin=3
tx_queue_data0_cwmax=7
tx_queue_data0_burst=1.5
hw_mode=g
channel=4
ieee80211n=1
ht_capab=[HT20][SHORT-GI-40][DSSS_CCK-40]
interface=wlan0
wpa_passphrase=blebleble
wpa=1
wpa_pairwise=TKIP
ssid=cipkacipka
bridge=br-lan
wmm_enabled=1
bssid=00:23:69:a3:a1:69
ignore_broadcast_ssid=0
root@OpenWrt:/var/run#
oraz
root@OpenWrt:/etc/config# cat wireless
config 'wifi-device' 'radio0'
option 'type' 'mac80211'
option 'macaddr' '00:23:69:a3:a1:69'
option 'hwmode' '11ng'
option 'htmode' 'HT20'
list 'ht_capab' 'SHORT-GI-40'
list 'ht_capab' 'DSSS_CCK-40'
option 'channel' '4'
option 'txpower' '15'
option 'disabled' '0'
config 'wifi-iface'
option 'device' 'radio0'
option 'ssid' 'cipkacipka'
option 'network' 'lan'
option 'mode' 'ap'
option 'encryption' 'psk'
option 'key' 'blebleble'
i wtedy:
root@OpenWrt:~# wifionoff
Configuration file: /var/run/hostapd-phy0.conf
HT (IEEE 802.11n) with WPA/WPA2 requires CCMP to be enabled
1 errors found in configuration file '/var/run/hostapd-phy0.conf'
Failed to start hostapd for phy0
Chyba doszedłem w czym częściowo rzecz:
Przełączyłem na WPA2-PSK i poszło nawet z "n".
Jeśli "n" wymaga WPA2 a nie chodzi na WPA to niestety ja tego nei wiedziałem a Luci pozwoliło na takie ustawienie 
Czy "ng" powinno chodzić na WPA-PSK ?
gdy w wireless "n" wykasuje lub zamienię kolejnością na "gn" to błędu nie wywala ale nie ma w żadnym przypadku "n"