run without error, but got nothing at target port

[z0y1]

I really appreciate you providing this tool, but I've run into an issue while using it. The program executes normally, but I'm not receiving any UDP packets on the target port.

program status:

interface status:

iftop -i bond0 -n -P -N -f "udp port 5000"

iftop -i bond0 -n -P -N -f "udp port 8000"

Am I missing anything here?