Apologies is this should go to the ath mailing list, but we are not sure where in the stack the problem lies. On a 3.11 kernel, we are trying to create a AP host using the following hardware: driver (usb) ath9k_htc: Atheros AR9280 Rev:2 using htc_7010.fw firmware (1.3, extracted from debian unstable) After solving some regulatory domain issues by patching the ath driver, we can force the card into becoming master at 5 GHz. However, at 5GHz, the clients are isolated from each other (can not ping etc). When we switch back to 2.4 GHz (making only two changes in the hostapd file, hw_mode=a->g, channel=36->1) the system works as expected. Using wireshark/tcpdump I verified that ARP packets are _not_ transmitted from the AP host to other clients. In other words, ARP from client to AP hosts are resolved ok, but a client trying to resolve the MAC from another client gets no response and the packet is not seen even on a Windows host running wireshark. Switch to 2.4 GHz and the ARP packets return. Looking at mac80211/cfg.c, I see that host isolation is indeed an option. I printed the value of IEEE80211_SDATA_DONT_BRIDGE_PACKETS but it is false as expected. Can anyone tell me whether this is likely a problem at the mac80211 level or closer to the hardware ? Are there other settings that kick in a 5 GHz that would not at 2.4 GHz ? We are quite capable of modifying drivers but have little knowledge of wireless hardware. Any information would be much appreciated. Sincerely, Gertjan hostapd (v1.1) settings are: interface=wlan0 driver=nl80211 ssid=MSS-01 ieee80211n=1 macaddr_acl=0 auth_algs=1 ignore_broadcast_ssid=1 require_ht=1 ht_capab=[HT40+][SHORT-GI-40][TXSTBC][RXSTBC123] wmm_enabled=1 hw_mode=a channel=36 country_code=US ap_isolate=0 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
