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

David Williamson dlw+arin at tellme.com
Fri Oct 8 09:38:42 EDT 2010

On Thu, Oct 07, 2010 at 04:08:37PM -0400, Christopher Morrow wrote:
> replace 'wireless network' with '6rd' or 'network with a
> new/different/other routing domain/requirements'

Absolutely - there's a clear need.
> (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
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.

There's definitely risk with accepting longer prefixes (a /32 de-agg'd
to /48 is an interesting DoS), but what are people actually doing?  I
suspect there are places where anything longer than a /32 isn't
accepted, but all I've heard so far is the rumor of that.


More information about the ARIN-PPML mailing list