I know this is late, but better late than never...
Overall, the document is good, but I think that the document would
benefit from slight tweaking w.r.t. to multicast. I.e., I assume that
an "addressing architecture" should be complete and at a minimum offer
pointers to the relevant pieces. I don't think it quite does that in
the case of multicast.
> 2.7 Multicast Addresses
This section only mentions the T flag, and not the P flag. That doesnt
seem right, since the P flag is clearly in use now and not "0". Was
there a concern about a possible normative reference? I don't think
there needs to be. Suggestion:
Old:
> +-+-+-+-+
> flgs is a set of 4 flags: |0|0|0|T|
> +-+-+-+-+
New:
+-+-+-+-+
flgs is a set of 4 flags: |0|0|P|T|
+-+-+-+-+
and then add something like:
The definition and use of the P bit can be found in [RFC 3307].
and make the reference informative.
Also, there are no IANA considerations for multicast addresses. But,
if you look at the IANA web page
(http://www.iana.org/assignments/ipv6-multicast-addresses), it says:
> IPv6 multicast addresses are defined in "IP Version 6 Addressing
> Architecture" [RFC2373]. This defines fixed scope and variable scope
> multicast addresses.
But, this document doesn't use the terminology "fixed" or "variable"
scope. So things seem out of alignment. Does this document need to
straighten things out?
Or, maybe it's the case that RFC 3307 is (now) the definitive
document? (IANA doesn't seem to have picked up anything from
there...). But 3307 document doesn't seem to use the "fixed/variable"
terminoligy either.
So, it's not immediately clear to me what is needed to get the IANA
page cleaned up, but since it _might_ involve tweaking text in this
document, I think it would be good to understand what needs to be
done before approving this document.
It's also not immediately clear to me that this document and rfc 3307
are completely aligned, e.g., in terms of consistent terminology. And
this document doesn't seem to reference 3307, which seems incomplete.
Nit:
> 2.5.3 The Loopback Address
>
> The unicast address 0:0:0:0:0:0:0:1 is called the loopback address.
> It may be used by a node to send an IPv6 packet to itself. It must
> not be assigned to any physical interface. It is treated as having
> link-local scope, and may be thought of as the link-local unicast
> address of a virtual interface (typically called "the loopback
> interface") to an imaginary link that goes nowhere.
better:
... to an imaginary link to which only a single node attaches,
namely the node itself.
(issue: the link does go somewhere, since packet sent there loop
back...)
Thomas
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