spam of INFO kafka.network.Processor - Closing socket connection to /172.23.44.4.

Hi all!

I have 3 brokers and I keep getting this message:
[kafka-processor-9092-0] INFO kafka.network.Processor - Closing socket
connection to /172.23.44.4.
or
[kafka-processor-9092-1] INFO kafka.network.Processor - Closing socket
connection to /172.23.44.4.

Do anyone know what that means???

(By the way, the IP isn't something in my network...)

I'm using kafka 0.8.1.1 with scala 2.9.2

thank for your help!

Here is my log:

[2014-06-10 18:43:58,332] 612950 [

François Langelier
Étudiant en génie Logiciel - École de Technologie Supérieure
<http://www.etsmtl.ca/>
Capitaine Club Capra <http://capra.etsmtl.ca/>
VP-Communication - CS Games <http://csgames.org> 2014
Jeux de Génie <http://www.jdgets.com/> 2011 à 2014
Argentier Fraternité du Piranha <http://fraternitedupiranha.com/> 2012-2014
Comité Organisateur Olympiades ÉTS 2012
Compétition Québécoise d'Ingénierie 2012 - Compétition Senior