Description of problem: The hostapd daemon fails to start because of an unexpected 80211 error. Version-Release number of selected component (if applicable): hostapd-2.0-7.el6.x86_64 How reproducible: Booting with the last kernel 2.6.32-573.1.1.el6.x86_64 on Centos 6.7 will make hostapd to fail. Booting with the previous kernel 2.6.32-504.30.3.el6.x86_64 will make it to work back again. Steps to Reproduce: 1. Boot Centos 6.7 (x64) with new kernel 2.6.32-573.1.1.el6.x86_64 2. Start hostapd Actual results: The daemon fails to start, throwing the next message : nl80211: Could not add multicast membership for scan events: -2 (No such file or directory) Expected results: The daemon starts without error and surrounding wifi devices see the AP Additional info: The command «locate 80211 | grep ko» gives the same driver list for both kernels. The /etc/hostapd/hostapd.conf content : ctrl_interface=/var/run/hostapd ctrl_interface_group=wheel bridge=br0 interface=wlan0 hw_mode=g channel=1 ssid=XXXXXXXXX ignore_broadcast_ssid=2 auth_algs=1 macaddr_acl=0 wpa=3 wpa_key_mgmt=WPA-PSK wpa_passphrase=XXXXXXXXXXXX wpa_pairwise=TKIP rsn_pairwise=CCMP ieee80211n=1 driver=nl80211 wme_enabled=1 ht_capab=[HT20][HT40-][HT40+][SHORT-GI-20][SHORT-GI-40][RX-STBC1][DSSS_CCK-40][MAX-AMSDU-3839]
The wireless driver is ath9k (AR9485, PCI VEN_168C/DEV_0032) which is loading correctly with both kernels.
Happens for me too. Rebooting with kernel 2.6.32-504.30.3.el6.x86_64 hostapd is lucky again. hostapd-2.0-7.el6.x86_64 lspci -k 03:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01) Subsystem: Foxconn International, Inc. Device e052 Kernel driver in use: ath9k Kernel modules: ath9k /etc/hostapd/hostapd.conf interface=wlan0 driver=nl80211
Would be good to figure if only ath9k module users are affected...
In addition to the epel package , https://w1.fi/hostapd/ The same can be compiled from the source code that you downloaded from It confirmed the event . In addition to the ath9 driver , use iwlwifi driver also use the intel AC7260 was confirmed to be the same state .
(In reply to groog from comment #4) > In addition to the epel package , > https://w1.fi/hostapd/ > The same can be compiled from the source code that you downloaded from > It confirmed the event . > > In addition to the ath9 module , use iwlwifi module > also use the intel AC7260 was confirmed to be the same state .
Same issue for me too with a Ralink Technology, Corp. Conceptronic C300RU v2 802.11bgn Wireless Adapter [Ralink RT2770] .
This is due to a bug in the kernel, see bug #1259870.
(In reply to Daniel Hokka Zakrisson from comment #7) > This is due to a bug in the kernel, see bug #1259870. I can't see that bug (Access Denied - You are not authorized to access bug #1259870), I must lack particular privileges to do so...
*** This bug has been marked as a duplicate of bug 1259870 ***