At 15:32 10/07/2002 +0000, Christopher Sharp wrote:
This was my suggestion in a nutshell. I believe the most commonly observed bogon list is maintained by Rob Thomas (http://www.cymru.com/Documents/bogon-list.html). draft-iana-special-ipv4-03 is IANA's most comprehensive list of special use netblocks (http://www.ietf.org/internet-drafts/draft-iana-special-ipv4-03.txt).
There is also Bill Manning's list (http://www.ietf.org/internet-drafts/draft-manning-dsua-08.txt). For those of you at the last RIPE meeting, recall that in the Routing Working Group I presented Geoff Huston's proposal that the registries make available a list of their unallocated addresses within their /8 blocks. And I believe all three intend to do that rsn.
This sounds excellent but doesn't cover prefixes IANA have not yet allocated to an RIR. This is why I would encourage frequent sharing of this data with the networking community and especially the maintainers of public bogon lists on which many people filter.
For anyone who is a masochist, I've put together a complete list of all the addresses which are marked in the three registry databases as being unallocated. I use this list for the Routing Report which I post to various lists once a week - and it's the basis for figuring out how much IPv4 address space is left (45.9%). The list is sitting on a router in my lab at the moment - comes to about 1500 entries once they are completely aggregated. Once the registries produce the lists for their blocks, I'll see how easy it would be to merge the two... I could make this publicly available if folks are interested... It would be a BGP feed - exercise left to the reader to figure out how to convert this into a dynamically updated routing and packet filter... ;-) Bigger question would be whether anyone would even want to do it... philip --