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From: hedrick@TOPAZ.RUTGERS.EDU (Charles Hedrick)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Broadcast Storms
Message-ID: <8708270922.AA06419@topaz.rutgers.edu>
Date: Thu, 27-Aug-87 05:22:21 EDT
Article-I.D.: topaz.8708270922.AA06419
Posted: Thu Aug 27 05:22:21 1987
Date-Received: Sat, 29-Aug-87 11:53:56 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 7

X.Y.255.255 is the new form.  X.Y.0.0 is the old form.  Unfortunately
it is easier to convince new software to use the old than old software
to use the new.  So until everybody updates, it may be easiest to
stick with the old format.  The decision is in fact made in the
kernel, not rwho.  You use ifconfig to choose the broadcast address.
Ifconfig is a program that primarily does system calls to set up
various options in the kernel.