Bogon Filter Update Request

Rob Thomas robt at
Sat Jul 19 17:01:42 UTC 2008

Hi, team.

*IF* you are going to enact bogon filters, please also consider
automated management of bogon filters, which you can find here:



Stan Barber wrote:
> Greetings NANOGers,
> Yes, I know it has been many years since I have been more than a lurker here
> on the NANOG list. It is gratifying to see the group continue to facilitate
> discussions among those that "get it done" in keeping the Internet up and
> running.
> Recently, I have moved back into a more operational role and I hope to
> renew my involvement here as I settle back in.
> So, to the point of my note: Bogon filter updates!
> I want to tell you that I am very appreciative of those operators out there
> that follow the changes in status of IP space and keep there BOGON filters
> updated. Unfortunately, it appears that there are many that are not 
> doing this regularly. I have been working on getting BOGON filter updates
> for the 174/8 space (IANA allocated this to ARIN back in February) with 
> upwards of 35 providers (some of the Tier 1 providers are among these)
> over the last several weeks.
> Please help me (and others who are getting allocations) by reviewing your
> BOGON filters and insure you are really filtering out BOGONs and not
> space that is allocated. If you need a pointer, the authorataive list 
> is maintained at
> Thanks for your attention and I hope to see some of you at an upcoming NANOG
> meeting.
> Stan Barber
> sob at (called "the other SOB on the Internet" by Scott Bradner
> many years ago in his first column for Network World magazine)

Rob Thomas
Team Cymru
The WHO and WHY team

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