[arin-ppml] IPv6 Non-connected networks

cja@daydream.com packetgrrl at gmail.com
Thu Feb 4 13:17:42 EST 2010


Michael,

Sure I can give you an example.  At one point the company I worked for
received 24.0.0.0/14.  It was not globally routable.  For some time, I would
say close to a year, Sprint would only listen to advertisements for
24.0.0.0/8.  Everyone who had a block of net 24 would advertise that block
as well as 24.0.0.0/8 and depending on the day and how lucky you were if
Sprint preferred your advertisement to 24.0.0.0/8 then you could get to
Sprint customers.  The other issue regarding this block was that most of the
world didn't have their routers configured to understand a subnet of a
traditional "class A" block.  So our NOC spent probably 1/2 it's time
tracking down these sites and getting them to add the appropriate commands.


It was a ton of fun!
----Cathy

On Thu, Feb 4, 2010 at 10:23 AM, Michael Richardson <mcr at sandelman.ca>wrote:

>
> Can you give me an example of a piece of address space (IPv4 or IPv6)
> that ARIN has issued that turned out to not be routable on the DFZ?
>
> The only example I can see are some of the 69/8 and 70/8 (if I got those
> prefixes right), which many people had bogon filters for, and it took a
> few months for those filters to get completely removed.
>
> (Please ignore micro-allocations for IXs, which are often intended not
> to be routable, but often turn out to be easily routed)
>
> I understand covering-your-ass legalize in the document, but really,
> let's be pragmatic here.
>
> --
> ]       He who is tired of Weird Al is tired of life!           |
>  firewalls  [
> ]   Michael Richardson, Sandelman Software Works, Ottawa, ON    |net
> architect[
> ] mcr at sandelman.ottawa.on.ca http://www.sandelman.ottawa.on.ca/ |device
> driver[
>   Kyoto Plus: watch the video <http://www.youtube.com/watch?v=kzx1ycLXQSE>
>                       then sign the petition.
>
>
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