Re: [MBONED] IPv6 Node Requirements (bis) vs LW-MLDv2

[Hitoshi Asaeda <asaeda at sfc.wide.ad.jp>]

Hi,

> IMHO, we WG might want to update this text after LW-IGMPv3/MLDv2 has been
> publushed.  Otherwise, all nodes that has applications need SSM MUST implement
> "full" MLDv2 (RFC3569, RFC4607) anyway, instead of LW-MLDv2; MLDv2 is not only
> for the wire format but also for state processing.

Are the following changes reasonable?

> |5.7. Multicast Listener Discovery (MLD) for IPv6 - RFC 2710
> |
> |
> |   Nodes that need to join multicast groups MUST support MLDv1
> |   [RFC3590].  MLDv1 is needed by any node that is expected to receive
> |   and process multicast traffic.  Note that Neighbor Discovery (as used
> |   on most link types -- see Section 5.2) depends on multicast and
> |   requires that nodes join Solicited Node multicast addresses.
> |
> |   Nodes that need to join multicast groups SHOULD implement MLDv2
> |   [RFC3810].  However, if the node has applications that only need
> |   support for Any-Source Multicast [RFC3569], the node MAY implement
> |   MLDv1 [RFC2710] instead.  If the node has applications that need
> |   support for Source-Specific Multicast [RFC3569], [RFC4607], the node
> |   MUST support MLDv2 [RFC3810].  In all cases, nodes are strongly

MUST support either MLDv2 [RFC3810] or LW-MLDv2 [LW-MLDv2]. In all cases, ...

> |   encouraged to implement MLDv2 rather than MLDv1, as the presence of a

encouraged to implement MLDv2 or LW-MLDv2 rather than MLDv1, ...

> |   single MLDv1 participant on a link requires that all other nodes on
> |   the link operate in version 1 compatability mode.
> |
> |   When MLDv1 is used, the rules in the Source Address Selection for the
> |   Multicast Listener Discovery (MLD) Protocol [RFC3590] MUST be
> |   followed.

Regards,
--
Hitoshi Asaeda

p.s. The intended status of the LW-IGMPv3/LW-MLDv2 draft is BCP.
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