Dear all,
I'm initiating this thread in the hope of understanding the
objections from the 6man WG and hopefully to make some progress for
this document. To initiate the discussion, below are provided some
preliminary Q/A:
What is the scope of this document?
The document specifies an algorithmic translation of an IPv6
multicast address to a corresponding IPv4 multicast address, and
vice versa. The document reserves two IPv6 multicast prefixes to
be used for that purpose.
What are these reserved prefixes?
* ff3x:0:8000::/96 for SSM
* ffxx:8000::/20 for ASM
Does this document update IPv6 addressing architecture?
No.
Is there a unicast counterpart of this proposal?
Yes, RFC6052.
What is the problem to be solved?
There are several use cases as detailed in [I-D.ietf-mboned-v4v6-
mcast-ps]. In particular, the following use cases are of
interest:
1. An IPv6-only receiver wants to receive multicast content from
an IPv4-only source (6-4).
2. An IPv4 receiver wants to join a multicast group in IPv4
domain via an IPv6-only network (4-6-4).
Are there solutions for the unicast counterpart of these use cases?
Yes; various solutions including:
1. 6-4: RFC6146
2. 4-6-4: RFC6333, RFC6346, ...
The latest version of the document is available at:
https://tools.ietf.org/html/draft-ietf-mboned-64-multicast-address-format-03.
Comments and suggestions are more than welcome.
Cheers,
Med
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