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Re: Fwd: 41/8 announcement

  • From: william(at)elan.net
  • Date: Fri May 26 10:45:19 2006

On Fri, 26 May 2006, Bill Woodcock wrote:

     On Fri, 26 May 2006, Mikisa Richard wrote:
   > Can't be sure what they did, but I received an e-mail asking me to check
   > on my connectivity to them and well, it worked.

Presumably they're double-natting.  I had to do that once for Y2K
compliance for three large governmental networks that were all statically
addressed in net-10 and wouldn't/couldn't renumber in time.  In fact,
there were _specific hosts_ which had the same IP address, and _had to
talk to each other_.  Gross.  But it can be done.
Please explain how. I simply can't imagine my computer communicating
with another one with exactly same ip address - the packet would never
leave it. The only way I see to achieve this is to have dns resolver
on the fly convert remote addresses from same network into some other
network and then NAT from those other addresses.

--
William Leibzon
Elan Networks
[email protected]