HIGHRES_IMU MAVLinkV2 message from wfb-ng, any idea?

[lida2003]

I have met an odd issue.

Hardware: PC --8812AU -- 8812EU -- openipc-ssc30kq -- FC
Software: msposd -- wfb-ng(ground station) ----wireless --- wfb-ng(airunit) -- msposd -- UART -- Ardupilot
Settings: msposd(14550 server) -- wfb-ng (peer = 'connect://127.0.0.1:14550') --- wfb-ng(telemetry_tx -p 16 -u 14550 -K /etc/drone.key -B 20 -M 1 -S 1 -L 1 -G long -k 1 -n 2 -T 0 -i 7669206 -f data wlan0) -- msposd (output 14550) -- Ardupilot (MSP Displayport)

Issue: we got "HIGHRES_IMU MAVLinkV2 message" , see below:

*Note: mavfwd is killed in rc script. *

daniel@daniel-nvidia:~/Work/msposd/release/jetson$ ./a.out 
UDP server is listening on port 14550...
Received message length: 20 bytes
Data in hex: FD 08 00 00 D3 03 44 6D 00 00 00 00 02 00 E5 E5 64 CC CC 39 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 D4 03 44 6D 00 00 00 00 03 00 E6 E6 64 CD 07 77 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 D5 03 44 6D 00 00 00 00 03 00 E5 E5 64 CD 2C 07 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 D6 03 44 6D 00 00 00 00 07 00 E6 E6 64 CD 25 88 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 D7 03 44 6D 00 00 00 00 03 00 E6 E6 64 CE 11 85 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 D8 03 44 6D 00 00 00 00 04 00 E6 E6 64 CE BC E3 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 D9 03 44 6D 00 00 00 00 05 00 E6 E6 64 CE 43 34 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 DA 03 44 6D 00 00 00 00 03 00 E6 E6 64 CE F0 B4 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 DB 03 44 6D 00 00 00 00 02 00 E6 E6 64 CD 67 49 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 DC 03 44 6D 00 00 00 00 05 00 E6 E6 64 CD B8 7E 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 DD 03 44 6D 00 00 00 00 01 00 E5 E5 64 CC 3D 78 
Client IP: 127.0.0.1, Port: 55498

Received message length: 20 bytes
Data in hex: FD 08 00 00 DE 03 44 6D 00 00 00 00 04 00 E5 E5 64 CD 38 49 
Client IP: 127.0.0.1, Port: 55498

Regardless of whether the flight controller is connected, this situation persists. Only stopping wifibroadcast on the PC can stop receiving this message.

Question is where did those mavlink messages come from?

Here is the link of the issue I have met: OpenIPC/msposd#17