nanog mailing list archives

Re: Is it time to abandon bogon prefix filters?


From: Randy Bush <randy () psg com>
Date: Fri, 08 Aug 2008 07:59:20 +0900

rob,

If the source of a scan or probe is a bogon, we tag it that way in our
data store.  I went back to 2008-01 and found the following percentages
of bogons in our data:

   2008-01: 0.001095262%
   2008-02: 0.001759343%
   2008-03: 0.001619555%
   2008-04: 0.001433908%
   2008-05: 0.001182351%
   2008-06: 0.130534559%
   2008-07: 0.002327683%
   2008-08: 0.001258054% (thus far)

this is an extremely far cry from 60%.  what am i not understanding?

and can you separate reserved (127, ...) and unallocated?

randy


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