pip install ryu 

oder

 git clone git://github.com/osrg/ryu.git
 cd ryu; python ./setup.py install

wenn er wegen Oslo meckert:

 sudo pip install oslo.config --upgrade

• http://ryu.readthedocs.io/en/latest/getting_started.html
• https://gist.github.com/olegslavkin/e01ccc1835396402dc2f

sudo apt-get install python3-pip
sudo pip3 install ryu 

# Zodiac needs to be restarted for config changes to take effect

set of-controller 192.168.178.220