I am experimenting with capabilities, on Debian Gnu/Linux. I have copied /bin/ping to my current working directory. As expected it does not work, it was originally setuid root. I then give my ping the minimal capabilities (not root) by doing sudo /sbin/setcap cap_net_raw=ep ./ping, and my ping works, as expected. Then sudo /sbin/setcap -r ./ping to revoke that capability. It is now not working as