How to use tcpdump on Android devices

>adb push tcpdump /sdcard/tcpdump
>adb shell
>su
>cp /sdcard/tcpdump /data/local/tcpdump
>chmod 6755 /data/local/tcpdump
>cd /data/local
>/data/local/tcpdump -p -vv -s 0 -w /sdcard/capture.pcap
ctl+c
>adb pull /sdcard/capture.pcap c:\