Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!husc6!cmcl2!rutgers!ames!sdcsvax!ucsdhub!hp-sdd!hplabs!sdcrdcf!trwrb!scgvaxd!wlbr!jplgodo!elroy!david
From: david@elroy.Jpl.Nasa.Gov (David Robinson)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Broadcast Storms
Message-ID: <4359@elroy.Jpl.Nasa.Gov>
Date: Fri, 28-Aug-87 01:06:05 EDT
Article-I.D.: elroy.4359
Posted: Fri Aug 28 01:06:05 1987
Date-Received: Sun, 30-Aug-87 06:18:16 EDT
References: <8708270922.AA06419@topaz.rutgers.edu>
Organization: Image Analysis Systems Grp, JPL
Lines: 26
Summary: WRONG!

In article <8708270922.AA06419@topaz.rutgers.edu>, hedrick@TOPAZ.RUTGERS.EDU (Charles Hedrick) writes:
> 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. 
Agreed, until you have a net where 100% can understand new style
broadcasts you should leave it as the old style.

> 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.

WRONG!  All of the programs in the 4.3bsd distribution that broadcast
make an ioctl call to get the kernel broadcast address which is
set via /etc/ifconfig.  SunOS 3.[3-4] suffers from the fact that
none of their programs that broadcast check the kernel broadcast
address and insist on using old style 4.2bsd broadcasts.



-- 
	David Robinson		elroy!david@csvax.caltech.edu     ARPA
				david@elroy.jpl.nasa.gov (new)
				seismo!cit-vax!elroy!david UUCP
Disclaimer: No one listens to me anyway!