Are you running a multicast router?
Yes- we have pim6sd FreeBSD routers... Which i suspect only support sMLDv1 ?
Also, you could try reverting to MLDv1 by: sysctl -w net.ipv6.conf.eth0.force_mld_version=1
Yay - that works :) Fantastic :) But only since kernel version 2.6.4 ?
How long until Linux can route IPv6 multicast ?
Thanks !
nick.