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Date:      Wed, 17 Apr 2013 15:01:27 -0500
From:      Brooks Davis <brooks@freebsd.org>
To:        Joshua Isom <jrisom@gmail.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: control of order of inet devices
Message-ID:  <20130417200127.GB30583@lor.one-eyed-alien.net>
In-Reply-To: <516E6B10.2080000@gmail.com>
References:  <20130416135621.GE3286@vpn.offrom.nl> <20130416154423.GD98205@lor.one-eyed-alien.net> <20130417091408.GG3480@vpn.offrom.nl> <516E6B10.2080000@gmail.com>

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On Wed, Apr 17, 2013 at 04:27:44AM -0500, Joshua Isom wrote:
> On 4/17/2013 4:14 AM, Willy Offermans wrote:
> > This is what I read in some of the articles or handbook as well. Can I
> > reorder this linked list? Can I control the order by creating the kernel
> > and reordering the inclusion of the device drivers?
> >
> > I am aware that the request sounds silly, but I have a third party prog=
ram
> > which checks its licence against the first inet device. Since I have ad=
ded
> > a new inet controller, the sequence has changed. Of course I ask for a =
new
> > licence, but they want to charge me for that and I do not see any reason
> > for that.
>=20
> Load old inet devices like normal, in loader.conf.  Then load the new=20
> device driver before networking, after rc's started.  If it'd because of=
=20
> probe order, then you might just have to control the probe order the=20
> hard way.  If the program's calling ifconfig itself, you could write a=20
> wrapper to resort the output.  And call a lawyer, getting a new ethernet=
=20
> card shouldn't void a license.

It wouldn't be particularly hard to influence the sorting of the list if
you're willing to modify the if_attach_internal() function and always
insert devices with that name at the beginning.  It just doesn't seem
very general purpose so I'd have a hard time considering including it.

-- Brooks

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