[111243] in North American Network Operators' Group
Re: Private use of non-RFC1918 IP space
daemon@ATHENA.MIT.EDU (Andre Sencioles Vitorio Oliveira)
Mon Feb 2 13:15:18 2009
From: Andre Sencioles Vitorio Oliveira <asenci@gmail.com>
To: nanog@nanog.org
In-Reply-To: <20090202.190658.78766688.sthaug@nethelp.no>
Date: Mon, 2 Feb 2009 16:15:06 -0200
Errors-To: nanog-bounces@nanog.org
What about this?
Genius from company A chooses public IP block A.
Genius from company B chooses public IP block A.
Genius collision detected...
On Feb 2, 2009, at 4:06 PM, sthaug@nethelp.no wrote:
> Company A uses public IP block A internally. Company B uses public IP
> block B internally. Company A and B later merge, and connect their
> networks. No conflict, no renumbering needed (at least not right
> away).
>
> Compare this with company A and B both using overlapping part of for
> instance 192.168.0.0/16, and then merging. Conflict ensues,
> renumbering
> or NATs required in order to connect the networks.
>
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
Andre Sencioles Vitorio Oliveira
asenci@gmail.com
