From owner-freebsd-stable@FreeBSD.ORG  Thu Mar 15 16:26:04 2007
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To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>
In-reply-to: Your message of "Thu, 15 Mar 2007 16:27:02 BST."
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Date: Thu, 15 Mar 2007 08:58:39 -0700
From: Bakul Shah <bakul@bitblocks.com>
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Cc: freebsd-stable@FreeBSD.ORG, "Bruce M. Simpson" <bms@FreeBSD.org>
Subject: Re: tap device at boot time 
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> maybe this is slightly OT, but I tried using /dev/tap0 by QEMU on FBSD 7.0-CU
> RRENT and 6.2-STABLE at boottime. 

...

> (MAC_ADDRESS replaced by a valid MAC address). Reason ist I try to get an IP 
> via DHCP - this is restricted by our computer center and their DHCP maintenan
> ce so I do not have influence on that. I need to provide them a fix MAC addre
> ss.

My response is definitely off topic but with qemu don't you
need a fixed mac address for the *guest* OS if you want your
to assign an IP address via DHCP?  For that you use -net
nic,MACADDR so that the guest will use MACADDR.  tap0 mac
address doesn't matter.  Or may be I misunderstand you....