Re: /25's prefixes announced into global routing table?

[Owen DeLong <owen () delong com>]

On Jun 22, 2013, at 10:16 PM, Grzegorz Janoszka <Grzegorz () Janoszka pl> wrote:

> On 22-06-13 17:30, Owen DeLong wrote:
> > Looking at the number of autonomous systems in the IPv6 routing table and the total number of routes, it looks like 
> > it will shake out somewhere in the neighborhood of 3-5 prefixes/ASN. Since there are ~35,000 unique ASNs in the IPv4 
> > table, I figured simple multiplication provided as good an estimate as any at this early time.
>
> Deaggregating of IPv4 announcements is done for traffic engineering and
> to fight ddoses (just the attacked /24 stops being announced to
> internet). I think some people will just copy their v4 habits into v6
> and then we might have explosion of /48's.
> I wouldn't be so sure about just 3-5 prefixes/ASN.

Some ASNs will be more, some will be less. Since there's already some DDOS and such on IPv6, I would expect the current 
prefix table to include a reasonable example of all of the behaviors you describe.

Owen