HP ELiteOne 800 - ICMPv6 'Multicast Listener Report' messages are totally flooding the local network

Hi,

We received 12 HP EliteOne 800 - running Windows 7 which are flooding network with ICMPv6 Multicast Listener Report messages every day ; it seems to appear when stations are leaving sleeping state.

Network is totally flood during 15 minutes with very bad consequences on internel network services (including crash of some) and users...

After long investiguations, it appears that it may be related to I217-LM Ethernet chip. We've been alterting Microsoft, Intel but no one is able to give a reasonnable confirmation/explanation of issue, neither a fix, except by playing around with configuration (disabling IPv6 or sleeping state).

See :

http://social.technet.microsoft.com/Forums/windows/en-US/945125a7-035f-4f33-a9d2-c274717d7706/icmpv6-multicast-listener-report-messages-are-flooding-the-local-network?forum=w7itpronetworking

and

https://communities.intel.com/message/220048#220048

Can HP get in touch with Intel and/or Microsoft to give us definitive information and fix of this issue ?

Regards

Antoine Davous