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From: tcp-ip@ucbvax.ARPA
Newsgroups: fa.tcp-ip
Subject: Re: subnet addresses
Message-ID: <9439@ucbvax.ARPA>
Date: Mon, 29-Jul-85 12:57:20 EDT
Article-I.D.: ucbvax.9439
Posted: Mon Jul 29 12:57:20 1985
Date-Received: Wed, 31-Jul-85 02:32:19 EDT
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Organization: University of California at Berkeley
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From: "J. Noel Chiappa" <JNC@MIT-XX.ARPA>

	This is being discussed by the group that did the subnet change
to the IP architecture. The general feeling in that group is that subnet
'0' should be non-legal (i.e. reserved for future use). This follows
the precedent in the IP architecture where all 1's and all 0's either
have special meaning or are preserved. This restriction will probably
be in the extended subnet specification document (to appear soon).

	Noel
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