3 Replies Latest reply on Apr 10, 2018 4:03 PM by LudoDrone

    Tcpdump output shows Aero always broadcasting UDP packets

    LudoDrone

      Hello everyone,

       

      for curiosity I ran the command:

       

      sudo tcpdump -i wlp1s0

       

      on my Aero with Ubuntu 16.04  (BIOS, Pixhawk and FPGA up-to-date) and the output is:

       

      15:00:07.700555 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.700586 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 44

      15:00:07.705873 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.705939 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.716590 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 74

      15:00:07.716724 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.716782 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 44

      15:00:07.716835 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.720820 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.726366 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.726435 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.726480 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.735634 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.736773 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 74

      15:00:07.737272 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.737303 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 44

      15:00:07.738089 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.741313 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.755482 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 40

      15:00:07.757767 IP 192.168.8.1.45781 > 192.168.8.255.14550: UDP, length 74

       

       

      I was wondering if all those broadcast packets are MAVlink packets (heatbeats? GPS requests?) but the port is 14550.

       

      Can someone give me some insights about it?

      Is that broadcasting decreasing wifi performance?