My simple application and IANA

Hello,

I have developed a simple win32 app and built it with VisualStudio2008.
it doesn’t do anything, it just shows a normal window on the screen.
However, as soon as it appeared on the screen comodo firewall showed a message saying that my application
was trying to connect the following IP address (or something like that) 224.0.0.252 through IGMP.
Obviously, there is no code inside my app that do that. So I’m assuming what is causing that is dll loaded in the process space of my app.
So if my assumption is correct (or even not), how is that possible? and how can I fix that?

Thank you