[openib-general] [PATCH] Enable inet6 on ib interface

[Hal Rosenstock]

On Thu, 2004-11-11 at 15:13, Roland Dreier wrote:
> One question about IPv6 and IPoIB: currently the IPoIB driver joins
> the IPv4 broadcast group and then uses those parameters to join or
> create (as needed) the other groups, including all IPv6 multicast
> groups.  Is this correct, or is there a distinguished IPv6 MCG that is
> supposed to be used as a base as the IPv4 broadcast group is?

There are no broadcast addresses in IPv6, their function being
superseded by multicast addresses. Neighbor Solicitation messages are
multicast to the solicited-node multicast address of the target address.
So I don't think there is a "master" IPv6 group.

The IPoIB I-D does say that all group parameters should come from the
broadcast group. But that's an IPv4 group so I'm not sure about IPv6 as
a node could have an IPv6 interface but no IPv4 interface.

-- Hal