Date: Fri, 19 Jan 2001 23:52:12 +0900
From: [EMAIL PROTECTED]
Message-ID: <[EMAIL PROTECTED]>
| A6 chain will not stay in the same zone. it will go up from leaf site
| to a small ISP, then to middle ISP, and then to large ISP. this is
| the purpose of A6.
Well, perhaps. This will depend upon how it is configured. The example
you showed is most likely taking the thing towards absurdity (and yes,
that is certainly possible).
On the other hand, I suspect that many sites will not want to place their
addresses into the hands of some other zone administrator, and will instead
use
foo.itojun.org. IN A6 64 ::9876:5432:9876:5432 segment0.itojun.org.
segment0.itojun.org. IN A6 48 ::1234:0:0:0:0 ispX.itojun.org.
ispX.itojun.org. IN A6 40 0:0:0012:: ispY.itojun.org.
ispY.itojun.org. IN A6 32 0:0:2300:: ispZ.itojun.org.
ispZ.itojun.org. IN A6 16 0:9876:: ispU.itojun.org.
ispU.itojun.org. IN A6 0 1234::
which gives almost all the same benefits (except you need to be
involved when one of the prefixes changes), and gives you the
added security (peace of mind I mean, not mathematical type security)
that your addresses are all under your control.
Then, having done that you will probably realise that you could
just as easily make the third one be...
ispX.itojun.org. IN A6 0 1234:9876:2312::
(assuming I mentally did the correct transformation) and not bother
with the long chain. It might mean a few more records to update if/when
one of the ISP prefixes changes (not in this example, but in general
it would), but not so many more that it becomes unreasonable.
Then the chain is just 3 long, and all in the same zone.
However, we do need more experimentation with A6 - and to get that
we need people to actually use the thing, rather than just looking
at the worst possible configuration of it and throwing up their hands
and saying "too hard".
kre
--------------------------------------------------------------------
IETF IPng Working Group Mailing List
IPng Home Page: http://playground.sun.com/ipng
FTP archive: ftp://playground.sun.com/pub/ipng
Direct all administrative requests to [EMAIL PROTECTED]
--------------------------------------------------------------------
