The wpa_supplicant is not a driver. It is a user-mode program that mediates between the higher-level network access via WI-FI and the IP network stack. It doesn't do any filtering of any type, though it does make IOCTL calls into the kernel network code and listens to messages and events triggered from that stack. If anything is blocking the multicast traffic it is likely a configuration item on the device, though that may not be exposed. <div class="gmail_quote">On Wed, Mar 6, 2013 at 12:38 AM, FoxKisaraki <<a href="mailto:sakurazuka2001@yahoo.com.tw" target="_blank">sakurazuka2001@yahoo.com.tw</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Finally, I found where the problem is These time I tried several Android devices, include : 1. Asus TF200T, TF300T 2. Wanxin TA-10C 3. HTC Butterfly 4. MIUI MI 1S I can run my program on MIUI MI-1S as I expected. Now I can almost sure that root cause is Wi-Fi driver. (wpa_supplicant) Although it is big headache, but I think there is nothing I can do about devices which blocked multicast. Well.. at least I still can keep developing my program on MIUI MI 1S. -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/GStreamer-Multicast-on-Android-tp4658289p4658912.html" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/GStreamer-Multicast-on-Android-tp4658289p4658912.html</a> <div class="HOEnZb"><div class="h5">Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </div></div></blockquote></div>