Hi there, 

I'm trying pox now and I think I meet a bug.

I add a line like `log.debug('DISCONNECT')` in _handle_ConnectionDown() of 
l2_multi.py. Then I connect mininet to the l2_multi controller, and then 
manually disconnect s1 from controller by `ovs-vsctl del-controller s1`. I can 
only see output from openflow.of_01, like:

INFO:openflow.of_01:[Con 2/1] closing connection
DEBUG:openflow.of_01:[Con 2/1] Socket error: Bad file descriptor
DEBUG:openflow.of_01:[Con 2/1] disconnecting


but nothing of "DISCONNECT" from l2_multi. So I think this might be a bug. 
(btw, I'm using the master version of pox from github) 

-- 
Best regards, 
Can Zhang



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