On Monday, February 20, 2012 08:12:34 AM Yingang Fu wrote: > It is wired that my AP send the station a null-date packet. > As i know that this packet could only been sent by the station. > Under which case the AP will send out this type of packet? Don't know much about other AP software. But hostapd sends them to check if a station is still in range and active. quote from hostapd.conf: # Station inactivity limit # # If a station does not send anything in ap_max_inactivity seconds, an # empty data frame is sent to it in order to verify whether it is # still in range. If this frame is not ACKed, the station will be # disassociated and then deauthenticated. This feature is used to # clear station table of old entries when the STAs move out of the # range. Regards, Chr -- 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
