Hi All, Good morning. Thank you for reading this mail. Am sorry for sending second same mail. Problem: While sniffing always getting NULL function data packets(QOS) from IPhone 6 plus to Router(STA to AP). But, AP to STA are in proper format. Environment: I have one set up, which comprises of "router(ASUS 900N), IPhone 6 Plus and Laptop". Driver: rt2800usb Sniffer (USB Wireless dongle): Wireless Dual Band Adaptor (Roseu ill) 450Mbps (chip-set rt3573). Operation System: Fedora Driver Package: Observed on 3.14.22-1 and Latest v3.19-rc1/. Observations: Able to sniff both directions data from laptop to router. "usb_fill_bulk_urb" in function rt2x00usb_kick_tx_entry (./rt2x00usb.c:311) giving data packets as NULL function data subtype. Please help me. Thanks and Regards, S Prasad -- 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