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From: Roy Smith <roy@panix.com>
Newsgroups: comp.lang.python
Subject: Re: Problem receiving UDP broadcast packets.
Date: Tue, 19 Apr 2011 23:35:43 -0400
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In article <iol875$ah2$3@reader1.panix.com>,
 Grant Edwards <invalid@invalid.invalid> wrote:

> I'm trying to implement a device discovery/configuration protocol that
> uses UDP broadcast packets to discover specific types of devices on
> the local Ethernet segment.  The management program broadcasts a
> discovery command to a particular UDP port.  All devices who get that
> packet are expected to answer regardless of thier current IP address.

Have you considered what will happen if you have, say, 1000 such 
devices, and they all respond at the same time?