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RE: NATs as firewalls

2007-03-09 11:28:31
bmanning(_at_)karoshi(_dot_)com wrote:
On Thu, Mar 08, 2007 at 11:22:05AM -0000, 
michael(_dot_)dillon(_at_)bt(_dot_)com wrote:

In any case, I don't have any examples to present since most of the
reclamation that has been done over the past few years was done
without
any fanfare. The RIRs and the organizations involved are really the
only
ones who know the details. Bill Manning was somehow involved in
identifying blocks to be reclaimed so he may be able to provide some
illumination without heat.

--Michael Dillon


      predating the existance of ARIN, LACNIC, and AFRINIC, i worked
      with the permission of the then IANA and our team reclaimed 14%
      of the total IPv4 space and put it back into the freepool. We
      could have done more (estimates of another 6-8% were feasable)
      but we ran out of funds and the IANA ceased being the registry
      of first/last resort.

      Time, processes, administrative thinking, and other factors
      have changed, which lead me to believe that reclaimation - as
      such - will not happen again to any noticable degree.

--bill

Even if one made the effort to reclaim, we are already burning through ~1/2%
per month, and in a couple of years as we near the end of the 'Reserved'
pool that is likely to be over 1% per month. So take back an entire /8, what
are you going to do 2 weeks later? Find the financing to dredge up 10% (to
be generous), that didn't even get a full year of run rate. I agree with
Bill, it is just not worth the effort so whatever reclamation happens will
go unnoticed. 

Tony





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