[69] in SIPB IPv6
sipb-6bone temporary disconnect
daemon@ATHENA.MIT.EDU (Ken Raeburn)
Fri May 21 19:07:53 2004
To: sipbv6@mit.edu
From: Ken Raeburn <raeburn@MIT.EDU>
Date: Fri, 21 May 2004 19:07:44 -0400
Someone today called my attention to a couple problems with our 6bone
routing. (1) VBNS appears not to be talking to us, at least on our
MERIT-allocated addresses, and (2) someone on the west coast seems to
be advertising our address block. So for the moment, we're pretty
much disconnected -- worse, our packets are going to someone else.
Access between our downstream and on-campus networks should continue
to be okay, but we can't reach the outside world at the moment.
(Sam tells me someone was complaining recently about a lack of
connectivity, but apparently decided not to send mail. I'm not
closely monitoring our connectivity every day. If you notice a
problem, please report it.)
I'm working on resolving (2), and trying to find a contact address to
deal with (1). Given that it's Friday afternoon, I don't expect
action on either one right away.
Negotiations with ARIN to get us a new address block of our own, for
native IPv6, are still in lawyer-wait.
We do have an address block allocated by VBNS, which we aren't using,
and we could move some people into if they want. Send me email; the
tunnel configuration (and DNS data, if any) has to be updated
manually. If you're using ipv6.mit.edu addresses, let me know if you
want the old address(es) to continue to be listed, and routed to you.
(If you don't say, I'll make my own guess.) Note that the reverse DNS
queries for the VBNS address block aren't delegated to us currently,
so you'll lose that capability, at least for now.
This block is a /48, smaller than the /32 MERIT block, so offhand, I'd
say anyone who got a block under 3ffe:1ce1:0::/48 (most of our
tunnels) can probably get it directly mapped into the new block, but
anyone who got a bigger block 3ffe:1ce1:XXXX/48 (where XXXX != 0)
would have to squeeze into a smaller block, probably around a /51,
though I haven't worked it out.
If I can't get the MERIT block issues resolved, we'll have to switch
over anyone who wants to keep using IPv6 through MIT.
Ken
