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William F. Maton Sotomayor wmaton at ryouko.imsb.nrc.ca
Tue May 29 15:41:35 UTC 2007

On Tue, 29 May 2007, Donald Stahl wrote:

>>> That said- ARIN is handing out /48's- should we be blocking validly
>>> assigned networks?
>> your network might have to to protect it's valuable routing slots. There
>> are places in the v4 world where /24's are not carried either. So, as Bill
>> said just cause you get an allocation doesn't mean you can assure
>> routability of it everywhere.
> I understand the problems but I think there are clear cut cases where /48's 
> make sense- a large scale anycast DNS provider would seem to be a good 
> candidate for a /48 and I would hope it would get routed. Then again that 
> might be the only sensible reason...

f-root does this on the IPv6 side:  2001:500::/48

Whether that's available everywhere on IPv6 networks, is as Bill 
pointed-out, another question.


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