Firstly, here's my network setup:
ISP (upstream if) => NAT ROUTER (downstream IFs) => Internal LAN
My internal LAN has got several types of computers running Linux, Windows XP, Windows Server 2003 and Windows 7.
I've noticed that I constantly get those messages in syslog:
Jan 17 13:11:21 pinstrate igmpproxy: The source address 192.168.2.9 for group 188.8.131.52, is not in any valid net for upstream VIF.
Jan 17 13:12:39 pinstrate igmpproxy: The source address 192.168.3.6 for group 184.108.40.206, is not in any valid net for upstream VIF.
The 192.168.3.6 and 192.168.2.9 are computers on my Internal LAN running Windows 7. And they even don't subscribe to the multicast or have anything to do with igmpproxy. But htose messages appear in syslog constantly. I guess this has something to do with SSDP or UPnP.
Is there any workaround for that?