On 2012-02-29 23:10 , Stig Venaas wrote: [..] > I think the main reason OpenBSD and NetBSD don't support SSM is > Apple's IPR claim. Without SSM support, there is little reason to > support MLDv2. > > I'm a bit curious about the reason for the question. At least MLDv2 > routers are supposed to support MLDv1 compatibility mode.
It was mostly curiosity as for ecmh on request I added the option to disable MLDv1 handling completely, but I didn't recall anymore if there was really an upshot to it, though it makes the code smaller a little bit. >> However, RFC 5790, on Lightweight IGMP/MLD makes it easy to support >> SSM. I think there is open source support for 5790 somewhere. > > What it does is basically removing exclude mode for a non-empty > source list. It is still a lot of work compared to IGMPv2/MLDv1. > Apart from hosts in general, I can imagine a lot of special purpose > devices that never needs SSM to only implement MLDv1. MLDv1 is indeed quite easy, MLDv2 makes things a lot more complex, but given a bit more testing I should have it all baked into sixxsd v4 and then I finally can turn it on on all the SixXS PoPs instead of only a select few of them. Greets, Jeroen -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
