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Date: Tue, 01 Jul 2003 15:01:13 -0400
From: Chuck Swiger <cswiger@mac.com>
Organization: The Courts of Chaos
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To: Matthew Grooms <mgrooms@shrew.net>
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cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject: Re: broadcast udp packets ...
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Matthew Grooms wrote:
>      Is there any way to generate a udp broadcast ( all routes
> 255.255.255.255 ) packet using a standard sendto() without it being
> translated into a local network broadcast? Is this just not "allowed"?

Are you trying to use 255.255.255.255 to reach something not on a local subnet?

If you have multiple interfaces, a broadcast to 255.255.255.255 should go out on 
all of them.  That being said, the all-ones broadcast address means "all local 
networks", and most routers will block such traffic from passing on in any event.

-- 
-Chuck