Here I go being silly again, but how about people take responsability for their own networks and filter properly at their borders? All this talk of how to enforce things is pretty meaningless when you have countless members of NANOG itself half-assing their own networks and complaining about other people's.

-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Sean Donelan Sent: Tuesday, February 13, 2001 11:53 AM To: nanog@merit.edu Subject: Re: Using unallocated address space

On Tue, 13 February 2001, Roy wrote:

...

It would seem to me that ARIN and its counterparts should get together and provide a "blackhole" BGP feed (the NBL?) where all packets destined for unallocated, restricted, or private space go bye-bye.

This isn't very effective because a longer, more specific prefix wins. It would immediately inflate the route table to its maximum size if the registries announced every possible delegation. It is similar to the problem with people hijacking addresses. Unless you tie it to filters which ignore prefix announcements longer than the "authorized" allocation size. Which brings us back to the start of this thread.

If AS1239 and others contributed and used something like the IRR to filter announcements, the problem is simplier.