[24974] in North American Network Operators' Group

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Re: The Mathematical Reality of IP Addressin in IPv4...

daemon@ATHENA.MIT.EDU (bmanning@vacation.karoshi.com)
Thu Aug 26 13:24:43 1999

From: bmanning@vacation.karoshi.com
To: forrestc@iMach.com (Forrest W. Christian)
Date: Thu, 26 Aug 1999 10:43:46 -0700 (PDT)
Cc: alex@Relcom.EU.net (Alex P. Rudnev),
	craig@seamless.kludge.net (Craig A. Haney),
	jcgreen@netins.net (Jon Green), jdfalk@cybernothing.org (J.D. Falk),
	nanog@merit.edu
In-Reply-To: <Pine.BSF.3.96.990826093454.4772A-100000@workhorse.iMach.com> from "Forrest W. Christian" at Aug 26, 1999 10:05:28 AM
Errors-To: owner-nanog-outgoing@merit.edu


> What this proposal appears to be proposing is to permit NON-CONTIGUOUS
> netmasks such as:
> 
>   255.128.127.0
> 
> Or, in binary:
> 
>  1111111111 10000000 01111111 00000000
> 
> Thus, the network number would actually consist of all 8 bits of octet
> one, the first bit of octet two, the last 7 bits of octet 3 and none of
> octed four.
> 

Non-contigious masks were allowed up until the CIDR era... :)

--bill


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