ARIN-PPML Message

[arin-ppml] early experimenter /32 catch-22

On Fri, Oct 8, 2010 at 9:38 AM, David Williamson <dlw+arin at tellme.com> wrote:
> On Thu, Oct 07, 2010 at 04:08:37PM -0400, Christopher Morrow wrote:
>
>> (you can't guarantee longer prefixes than a /32 get global
>> reachability... so subnetting the current allocation isn't feasible)
>
> Is that really true?  Would someone fess up about current routing

I know of a case (solved by announcing the /32 aggregate) of this, yes.
('hello docs.python.org!')

> practice?  We definitely accept longer prefixes, as we only have a /45,
> and we only advertise /48s.  Of course, that's in the PI block.

sure, so in the PI ranges it seems most places (save vzb?) accept to
/48. In the other allocation sets you can get to /32 but not often
very much further (for full reachability).

-chris