Hi all,

When I am trying to start pox controller:

./pox.py samples.pretty_log forwarding.l2_learning


I got the error:
*POX 0.2.0 (carp) / Copyright 2011-2013 James McCauley, et al.
[core                   ] POX 0.2.0 (carp) is up.
[openflow.of_01         ] Error 98 while binding socket: Address already in
use
[openflow.of_01         ]  You may have another controller running.
[openflow.of_01         ]  Use openflow.of_01 --port=<port> to run POX on
another port.*


I am almost sure there is no other controller running, I even tried:

sudo killall controller
sudo mn -c

but they did not work
also using --port or port did not work. I got:
This component does not have a parameter named 'port'

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