ctrl and s2 button was pressed when I plug BBB to the computer.
that was not needed at this stage, but if you got any IP, that should be fine anyhow.
Let's try manually setting the IP before we proceed:
try
sudo ifconfig en11 up 192.168.6.1
(type your root password followed by enter if prompted)
then try:
ping 192.168.6.2
if this shows errors, try again with different IPs:
sudo ifconfig en11 up 192.168.7.1
followed by
ping 192.168.7.2
If you get a working configuration, then go back to the steps above using ssh debian@192.168.7.2 or ssh debian@192.168.6.2 at the first line instead of ssh debian@beaglebone.local