I have a rooted device, I type "su" in adb shell, then I try to traceroute. It says "traceroute: not found". I can't find traceroute in any bin folders.
Thanks for any hints.
Traceroute is not avaiable with standard Android distribution. You may want to try installing BusyBox on your device: http://www.ihackintosh.com/2009/12/how-to-install-busybox-on-a-rooted-device/
It contains many useful tools that are avaiable on UNIX systems and are also working for Android. It can be downloaded here: http://www.busybox.net/