Private use of non-RFC1918 IP space

D'Arcy J.M. Cain darcy at
Mon Feb 2 17:20:25 UTC 2009

On Mon, 02 Feb 2009 18:03:57 +0100 (CET)
sthaug at wrote:
> > What reason could you possibly have to use non RFC 1918 space on a
> > closed network?  It's very bad practice - unfortunately I do see it done
> > sometimes....
> There are sometimes good reasons to do this, for instance to ensure
> uniqueness in the face of mergers and acquisitions.

How does that help?  If you are renumbering due to a merger, couldn't
you just agree on separate private space just as easily?

D'Arcy J.M. Cain <darcy at>         |  Democracy is three wolves                |  and a sheep voting on
+1 416 425 1212     (DoD#0082)    (eNTP)   |  what's for dinner.

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