>MLD reports are sent to the all-MLD-routers (link-local) > multicast group,but tunnels don't typically support > multicasting. I expect that's the problem. Is >IFF_MULTICAST set on the tunnel interface? Ok, that's what i thought. I tried to set it by using a setckopt with the option IPV6_MULTICAST_IF, but i still get the same probleme. i wanted to check if the flag IFF_MULTICAST was set, but as i am working under GNU/Linux and not BSD, i couldn't use the struct ifnet (which is not defined) as i found when i tried to look around if i could find how to check this. Therefore, i'm a little lost at the moment. Thanks for your help Fred Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout ! Créez votre Yahoo! Mail sur http://fr.benefits.yahoo.com/ Dialoguez en direct avec vos amis grâce à Yahoo! Messenger !Téléchargez Yahoo! Messenger sur http://fr.messenger.yahoo.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html