Hi sirs, Today, I noticed that when an data frame is sent by ieee80211_subif_start_xmit, then ieee80211_rx will be called twice , first is an Acknowledgement frame and second is the response data frame. Is this the normal case? It seems the RA frame is nonsense and just be freed in ieee80211_rx_monitor. Is there anyway to tell the hardware not report RA frame to mac80211? Thanks very much! Li gang -- 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