Hi, i've just seen this thread: https://lists.linux-foundation.org/pipermail/bridge/2010-October/007362.html We are affected too by this problem. Disable multicast_startup_query_count doesn't to do the trick. Recompiling the kernel without CONFIG_BRIDGE_IGMP_SNOOPING is ok. Our switch are dell powerconnect in m1000 chassis enclosure with "ip igmp snooping". Remove the igmp snooping on the switch seems to fix the packet loss. But we don't want to disable igmp snooping on our switch (and we prefer to not disabe BRIDGE_IGMP_SNOOPING on our kernel ...). I can provide more info if necessary. Regards. -- Jean-Philippe Menil - Pôle réseau Service IRTS DSI Université de Nantes jean-philippe.menil@xxxxxxxxxxxxxx Tel : 02.53.48.49.27 - Fax : 02.53.48.49.09 _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge