Hello, I am trying to capture packets that are exchanged between an AP and a smartphone on the 5Ghz frequency. For generating traffic, I upload UDP traffic from a laptop PC towards the smartphone using iperf. The problem is that I can see _only_ the control frames like RTS/CTS, Block ACK, while the data packets are not captured. I uploaded the Wireshark capture files at [1] (located inside the folders whose name starts with 5Ghz). If I use the 2.4 frequency, all the frames are captured. I also uploaded the Wireshark packet traces for 2.4Ghz at [1] (located inside the folders whose name starts with 2.4 Ghz). Is this a known bug or am I doing something wrong? Additional details: Wi-Fi card: iwlwifi 0000:04:00.0: Detected Intel(R) Dual Band Wireless N 7260, REV=0x144 Firmware version: iwlwifi 0000:04:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm Traffic encryption: WPA & WPA2 Personal Setting up the card in wireless mode: ip link set dev wlan0 down iw wlan0 set type monitor ip link set dev wlan0 up iw wlan0 set freq 5240 [1] https://drive.google.com/open?id=0B5SBH08PU_Chek9rOHY0VkxFRUE Thank you, Doru -- 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