In Kali 1.x stress testing was an open topic, but in Kali 2.0 stress testing has been driven off the main menu. Two of the tools from Kali 1.x are gone, DHCPig, and inumdator, but there should be no problem finding a good set of tools in the 2.0 toolbox, nonetheless.
ATK6-Denial6 is an IPv6 network stress-tester that sends packets to a target host and beats it into submission. The first illustration is the help file for ATK6-Denial6.
The next illustration is the nmap
-a reading for the vulnerable Windows 7 target ...