[From QnA] Multicast W5200 Arduino

This post came from QnA of WIZnet website

I am trying out the W5200 based WIZ820io module with the files you have in the download section. I am trying to receive Multicast UDP packets, and I am receiving nothing.
I tested with the W5100 chip, and works fine with stock Arduino libraries.

Dear customer,

Thanks for your interest in W5200.
Do you have been refer to our multicast reference source?
Let me know how it configure.
Please refer to source below.
Download path : [url]http://www.wiznet.co.kr/UpLoad_Files/ReferenceFiles/W5100_App_HowtoMulticasting.zip[/url]