Have you used arp to set a static entry for that MAC address? (arp -s)
and/or
made an entry in /etc/ethers , /etc/hosts ?

----- Original Message -----
From: "Alex White" <meltlet@fastmail.fm>
To: "Simon Burge" <simonb@wasabisystems.com>
Cc: <port-pmax@netbsd.org>
Sent: Monday, March 11, 2002 8:31 PM
Subject: Re: Netboot fun


> Oops, my bad. 27 is the byte size of the packet sent. I've found one
> other reference to it on the net at:
> http://www.net-kitchen.com/pipermail/suns-at-home/2001-April/000978.html
> which shows this packet to contain "unknown source address" as text.
> What could be causing this? As my tcpdump output shows, the client and
> server know their IP addresses otherwise they wouldn't be named in
> tcpdump.
>