filtering /48 is going to be necessary

Sat Mar 10 06:32:13 UTC 2012

On 3/9/12 22:02 , George Bonser wrote:

> An ISP that has been given a /32 or larger allocation from PA space
> and might have 10,000 customers each assigned their own /48 could
> instantly more than double the size of the IPv6 routing table if they
> disaggregated that /32.
> 
> The problem here is that each /32 is 65536 /48 networks.  An even
> larger net, say a /30 that disaggregates due to a router
> configuration goof means a potential of a huge number of networks
> suddenly flooding the Internet.

I'm well into my second decade of having a v6 prefix in the dfz and am
passingly familiar with powers of two...