In kali 2.0

If you try to capture traffic as a non root user, you will get an error message:

“wireshark linux you don’t have permission to capture on that device”

To solve this, run this command:

setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' /usr/bin/dumpcap

setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' /usr/sbin/dumpcap