tcpdump learn reference u-root
I'm windows debugging. Install npcap.exe or libpcap on your system.
# show network interface
go run . -D
# windows run
# couldn't load wpcap.dll
go run . -i "\Device\NPF_{5B164303-C40F-4CEA-9873-993ABE4018B9}" -n -v -number
# Liunx
cd build . -o tcpdump_go
sudo ./tcpdump_go -i eth0 -n -v -numberUI