Date: Tue, 16 May 2006 17:40:30 -0700 From: Doug Barton <dougb@FreeBSD.org> To: Unix-Solutions - Steven <steven@unix-solutions.be> Cc: freebsd-net@freebsd.org Subject: Re: /31 on 2 interfaces Message-ID: <446A70FE.1090807@FreeBSD.org> In-Reply-To: <001301c67946$604b7f70$aa00000a@cloe> References: <001301c67946$604b7f70$aa00000a@cloe>
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Unix-Solutions - Steven wrote:
> Hello,
>
> I have 2 servers with both 2x 'em' interfaces in it.
> I configged a /31 on both interfaces
> em0 in box 1 = 10.0.0.1
> em0 in box 2 = 10.0.0.2
That's not a /31, it's the middle two addresses of a /30 (as the end of your
message correctly surmised). Here is a hint. Because they use binary math,
CIDR blocks always start with an even address, and end with an odd one.
hth,
Doug
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