Re: World IPv6 Only Day.

On 9 jun 2011, at 19:34, Ray Soucy wrote:

But you're correct that without MLD snooping IPv6 ND traffic is on par with IPv4 broadcast traffic and not a major problem. It does mean, however, that a large IPv6 multicast stream, like video or system imaging, would be about as bad as doing so on IPv4 without IGMP snooping.

Of course the ethernet hardware in the host will filter multicast packets the host isn't listening for, so it just wastes some bandwidth on ports where the traffic isn't needed. This is unlike ARP, each ARP packet wakes up the CPU.