[40700] in North American Network Operators' Group

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Re: Natural class B address

daemon@ATHENA.MIT.EDU (Sean M. Doran)
Fri Aug 17 05:29:50 2001

To: nanog@merit.edu, saeyul@netvein.com
Message-Id: <20010817092913.1F0B0C7901@cesium.clock.org>
Date: Fri, 17 Aug 2001 02:29:13 -0700 (PDT)
From: smd@clock.org (Sean M. Doran)
Errors-To: owner-nanog-outgoing@merit.edu


Sae writes:

| Have question about filtering policy on the natural class B address block.
| Trying to use /21 or shorter for various places including international,
| from the natural class B block, we have now.   Do you see any problem on
| announcing as  /21  to the Internet?

Yes.  Give it back.  Renumber into best-fit CIDR blocks from
your provider(s) and/or IRR(s).  

Be a good citizen of the global routing tables, or be filtered.

	Sean.

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