route6: 2A00::/12

Antonio Prado aprado at
Sun Oct 21 12:21:07 CEST 2012

[cross-posted to ipv6-wg at]

Il 20/10/12 21:58, Manish Karir ha scritto:
> Hi Antonio,
> Yes. Merit is in the process of running a large IPv6 darknet experiment. Our goal is to announce every allocated /12 (1 from each RIR) first sequentially and then together. We conducted a 1hr test announcement on wed and to the best of knowledge we did not break anything. 
> These announcements will each last 1 week each starting Nov 1. 
> Your more specific announcements in BGP should still get all your data correctly routed to you. However if you have noticed any strange behavior please let us know. 
> Thanks. 
> -manish


thanks for your kind reply.

Maybe I missed some announcement e-mail here.
Is there any document to read about that "large IPv6 darknet experiment"
you at Merit are going to run in accordance also with RIPE NCC?
(I'm aware of what Geoff Juston made at APINIC in June 2010 with

I was wondering if any consensus is needed before starting such a big
thing that involves IPv6 production networks as well.

I mean: when my route6 is not announced via BGP, it's supposed that
every packet sent to it doesn't get anywhere, hopefully. OTOH, if during
this experiment, for any reason (wanted or not), my prefix is no more
announced, I'm afraid the /12 would attract (perhaps hijack?) those
packets (actually breaking, I believe, any existent ROA for the prefix).

So, just asking: what kind of packets are going to be collected and how
stored, analysed and by whom?

Thank you

> ----- Original Message -----
> From: Antonio Prado <aprado at>
> To: ipv6-ops at
> Cc: mkarir at
> Sent: Fri, 19 Oct 2012 13:09:23 -0400 (EDT)
> Subject: route6: 2A00::/12
> Hello,
> just saw a new entry in RADB for 2A00::/12 and was wondering if could be
> a fat-finger issue as our IPv6 prefix (a /29) actually belongs to that /12.
> route6: 2A00::/12
> descr: MERIT Network Inc.
>  1000 Oakbrook Drive, Suite 200
>  Ann Arbor
>  MI 48104, USA
> origin: AS237
> mnt-by: MAINT-AS237
> remarks: This announcement is part of an RIPE approved
>  experiment. For additional information please
>  send email to mkarir at
> source: RADB
> changed: ljb at 20121017
> Anyone aware of this experiment?
> Thank you
> --
> antonio

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