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Message-ID: <480147C7.6090107@FreeBSD.org>
Date: Sun, 13 Apr 2008 00:37:43 +0100
From: "Bruce M. Simpson" <bms@FreeBSD.org>
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Cc: freebsd-net@freebsd.org
Subject: Re: Howto send a limited broadcast?
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tmm wrote:
> So, can anyone suggest how I can send a limited broadcast (on an 
> interface that has been initalized with an IP and a subnet)?

Use the IP_ONESBCAST option and send to the network broadcast address 
for that subnet. The stack will change it into 255.255.255.255 on 
output. See man page ip(4) for details.

It's a hack, but it's largely due to how the stack has worked historically.

BMS