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Re: Fwd: [OCCAID] 6bone addresses going away in June
From: Jeroen Massar <jeroen () unfix org>
Date: Sat, 07 Jan 2006 02:07:17 +0100

Valdis.Kletnieks () vt edu wrote:
On Fri, 06 Jan 2006 10:12:37 CST, eric said:

We will begin filtering 3ffe::/16 traffic by the earlier of:
(i) June 6 2006; (ii) when transiting traffic sourced from or
destined to 3ffe address space drops below 5% of our aggregate
network traffic.

Is that 5% of your IPv6 traffic, or 5% of *all* your IPv(4+6) traffic?

Not the above network, but another... I just checked the log of
ipv6gate.sixxs.net (or more precise *.sixxs.org), resulting over the
last day the following 6bone prefixes seem to be active (simple cut
-f1,2 -d: on the address thus first 32bits) these are the only 6bone
prefixes using that service:

      4 3ffe:2500
     92 3ffe:80ee
    110 3ffe:831f
    136 3ffe:4019
    241 3ffe:80d0
 118455 3ffe:321f
 507624 3ffe:3201

3ffe::3200::/24 == CERNET

The rest of 6bone is pretty dormant compared to that one.
(Though they might also not be using the service of course)

Then again, check the top 5 6to4 sources (also per /32):
   9169 2002:d347
  12281 2002:a66f
  32554 2002:ca75
  65035 2002:de1d
2295865 2002:a269

Take a guess what the last line is from ;)

In this sample the number for 2001:<something> (RIR space, I didn't
catch anything from non-2001 prefixes) is:
2371150 2001

Other wise put:
6to4    2414904   44.61%
RIR     2371150   43.80%
6bone    626662   11.57%
total   5412716

Still an amazing 11.57% of the hits of this traffic sample.
And all coming from the same place too...

Btw, note that 6to4 is only used by 1 very large user site which also
has RIR space and 6bone space. Clearly for them 6to4 is very easy to
use. Btw2 I am not looking at transfered bytes here, but I assume them
to be mostly consistent with the hit count.

Most 6bone prefixes that are still announced are dormant on the net,
they are there but not used at all.


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