> 3) When multicast addresses are stored in a sockaddr_in6,
> how is the
> scope id field Interpreted?
>
> => I believe it should be an interface index because it is the way
> it works today (or before scope id introduction if you prefer :-):
> IPV6_MULTICAST_IF & IPV6_JOIN_GROUP deal with interfaces, not with
> interface sets.
I think Francis's position is easier to implement. Dave's *might* be more
useful to applications but it's messy because there isn't a 1-1
correspondence between unicast scopes and multicast scopes.
> Another point en passant, should in this case a bind() with a non-zero
> scope_id do an automatical IPV6_JOIN_GROUP?
I don't follow this - you can't bind() a multicast address.
Rich
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