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Date: Fri, 23 Nov 2007 13:59:55 +0300
From: Andrew Pantyukhin <infofarmer@FreeBSD.org>
To: "Alain G. Fabry" <alainfabry@belgacom.net>
Message-ID: <20071123105953.GJ66812@amilo.cenkes.org>
References: <20071122214158.GA37193@mail.pcextreme.nl>
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X-OS: FreeBSD 8.0-CURRENT amd64
User-Agent: Mutt/1.5.16 (2007-06-09)
Cc: freebsd-questions@freebsd.org
Subject: Re: creation of tap interface
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On Thu, Nov 22, 2007 at 10:41:58PM +0100, Alain G. Fabry wrote:
> 
> Hi,
> 
> I'm setting up Qemu, have installed Ubuntu and Gentoo guests on
> FreeBSD host but I would like to get the network interfaces to
> work also.
> 
> I get the following error however when trying to create the tap
> interfaces
> 
> FreeBSD# ifconfig tap create ifconfig: SIOCIFCREATE: Invalid
> argument
> 
> What is the problem here?

The command should work as you typed it, but try this:
# kldload if_tap
# ifconfig tap0 create
             ^^^