IPv6 Multicast Address Scopes
draft-ietf-6man-multicast-scopes-07

Thanks for addressing my Discuss

Agree with Adrian's discuss and Stephen's comments.

1. Did you mean to change the text for scop=1 in the table, from "Interface-Local scope" to just "Interface"?  I don't think so.

2. In Section 3 you say this:

   Section 5 gives the definition of scop 3 for IEEE 802.15.4
   [IEEE802.15.4] networks.

...but then Section 4 immediately talks about Section 5 of RFC 4007.  Just to make sure no one misunderstands, maybe Section 3 should say, "Section 5, below, gives...", yes?

3. I understand you're about to submit a revised I-D that clarifies this from the IANA Considerations:

   The registry
   will have a note associated with scope 3 listing all RFCs that define
   Realm-Local scoping rules that use scope 3.

I await that update, and might comment further...

I'm curious to see the response on Stephen's question.  Also, the referenced security consideration sections don't talk about the global scope and any risk related to not having a boundary.  Some text on that could be helpful or perhaps an explanation so I know why it is not needed would be helpful.

Ah, the glories of getting a late start on telechat reading.

I would have balloted Discuss on approximately Stephen's point, but it's already being robustly discussed among people who understand the details better than I do, and seems close to converging. :D

Pardon my multicast ignorance (I only used smcroute for the
1st time recently:-) but what happens if a router in the
group supports two different technologies on different
interfaces, each of which defines scop=3 to be something
local(-ish) - do the packets get forwarded between
technologies or not?

If the answer to the above is "yes," then I think there's a
security consideration to be stated here, which is that
scop=3 does not mean that packets are limited to being seen
by nodes running a specific technology but may go further
via a router. That could be unexpected enough to be worth
stating.

If the answer is "no" then I think you need to change the
draft to make that clearer, if you want people like me to
understand that.

Or maybe its just a dumb question:-)