From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
Subject: Re: [9fans] dumb udp broadcast question
From: "Russ Cox" <rsc@plan9.bell-labs.com>
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Date: Wed,  5 Dec 2001 12:18:37 -0500
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If you're in headers mode, you need to fill in the header with
a broadcast address and then write the data out.
Look at /sys/src/cmd/ip/dhcpclient.c