Hi I have a question. I have Debian Buster with hostapd 2.7 from packages. I would like to run AP with 80 devices connected to it without any encryption, at the bottom there is my configuration file. The problem is that after 11 devices has been connected, I can see in hostapd logs this message: wlp3s0: STA 4c:11:ae:f9:a0:fc IEEE 802.11: authenticated wlp3s0: STA 4c:11:ae:f9:a0:fc IEEE 802.11: associated (aid 11) wlp3s0: AP-STA-CONNECTED 4c:11:ae:f9:a0:fc wlp3s0: STA 4c:11:ae:f9:a0:fc RADIUS: starting accounting session 7D19D5A198595E57 wlp3s0: STA 4c:11:ae:f9:7c:e4 IEEE 802.11: Could not add STA to kernel driver wlp3s0: STA 4c:11:ae:f8:ee:fc IEEE 802.11: Could not add STA to kernel driver I have kernel vmlinuz-4.19.0-10-amd64 Debug from dmesg about wifi module: [ 7.276894] Intel(R) Wireless WiFi driver for Linux [ 7.317193] iwlwifi 0000:03:00.0: firmware: direct-loading firmware iwlwifi-3168-29.ucode [ 7.318027] iwlwifi 0000:03:00.0: loaded firmware version 29.1044073957.0 op_mode iwlmvm [ 7.516613] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 3168, REV=0x220 [ 7.548539] iwlwifi 0000:03:00.0: base HW address: d4:3b:04:51:69:e0 [ 7.670030] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0 My computer is Udoo x86 with this wifi module: https://shop.udoo.org/kit-m2-wifi-bt.html hostapd.conf # # nl80211 mode # ssid=fmcode interface=wlp3s0 hw_mode=g channel=5 #bridge=br0 driver=nl80211 logger_syslog=1 logger_syslog_level=1 wmm_enabled=0 wpa=0 preamble=0 #wpa_psk= #wpa_passphrase= #wpa_key_mgmt=WPA-PSK #wpa_pairwise=TKIP #rsn_pairwise=CCMP #auth_algs=1 #macaddr_acl=0 #noscan=1 ### IEEE 802.11n #ieee80211n=1 #ht_capab= #country_code=US #ieee80211d=1 ### IEEE 802.11n ### IEEE 802.11a #hw_mode=a ### IEEE 802.11a ### IEEE 802.11ac #ieee80211ac=1 #vht_capab=[MAX-MPDU-11454][SHORT-GI-80][TX-STBC-2BY1][RX-STBC-1][MAX-A-MPDU- LEN-EXP3] #vht_oper_chwidth=1 #vht_oper_centr_freq_seg0_idx=42 ### IEEE 802.11ac # controlling enabled ctrl_interface=/var/run/hostapd ctrl_interface_group=0 #End Any idea why only 10 devices can be connected. Actually I have the same issue on my laptop with different hardware. Best Regards Marek _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
