N reasons for not deploying ipv6

[Brent Sweeny]

I believe there's some MLD-aware layer2 equipment starting to emerge, 
but a function I don't think is there or even coming yet is v6-aware PIM 
snooping, which is going to be needed to support v6 multicast in even 
more places than MLD, I think.

On Tue, 18 Apr 2006 16:40:33 +0200 Iljitsch van Beijnum 
<iljitsch at muada.com> wrote:

Are there any switches that support MLD snooping, by the way? (Not
even talking about MLDv2...) I haven't heard of this. Unfortunately,
there are multilayer switches that implement IGMPv2 and assume
multicast for which they don't see IGMP must be blocked, which is of
course nonsense because you can't send IGMP messages for non-IPv4
ethernet group addresses.