On Fri, 2007-07-20 at 12:20 +1000, Robin Whittle wrote:
Thanks for answering my questions about /48s and for pointing me
to the guidelines which some or many people follow - Gert
Doering's page:
http://www.space.net/~gert/RIPE/ipv6-filters.html
In the absence of scalable IDR and route-certificates you'll also find
people using more strict filters in an attempt to achieve operational
stability. Such filters aim to keep the maximum numbers of prefixes
within the capacity of available hardware. Thus, if a registry allocates
blocks out of e.g. a /23 only a small fraction of that /23 may initially
be accepted, especially if it is used for PI /48s. The current v6
routing-table may be small, but I'm sure attitudes will change as more
people realise the potential impact on their infrastructure as it
becomes increasingly common to operate dual-stack networks.