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Date: Wed, 31 Dec 2014 10:44:07 -0800
From: Alfred Perlstein <alfred@freebsd.org>
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To: Garrett Cooper <yaneurabeya@gmail.com>, Glen Barber <gjb@FreeBSD.org>
Subject: Re: How to make a FreeBSD vm in virtualbox.
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Cc: Ryan Kois <ryan.kois@gmail.com>, hackers@freebsd.org, re@freebsd.org,
 Claudia Yadathi <yadathi@gmail.com>
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On 12/31/14 10:34 AM, Garrett Cooper wrote:
> On Dec 31, 2014, at 8:15, Glen Barber <gjb@FreeBSD.org> wrote:
>
>> On Wed, Dec 31, 2014 at 08:48:01AM -0700, Warren Block wrote:
>>> On Wed, 31 Dec 2014, Glen Barber wrote:
>>>> On Tue, Dec 30, 2014 at 10:04:38PM -0800, Alfred Perlstein wrote:
>>>>>> I think 'ifconfig_DEFAULT="DHCP"' in rc.conf(5) is what you want.
>>>>> Do we want this by default in all images?  (I would vote yes).
>>>>>
>>>> I'd actually argue 'no.'  As a sysadmin, I don't want any system doing
>>>> anything I don't expect it to do, virtual machine or not.
>>> It can have security implications.  And I've never tested what happens when
>>> there is more than one interface.  First one wins, probably.
>>>
>>> How about adding it to rc.conf, but commented?
>>>
>> I think this would be the least objectionable solution, with a note in
>> motd mentioning how to enable networking.
> Why not do what a lot of OSes do and give folks a dialog that says,
>
> “I saw you haven’t setup networking — do you want to do so now?”
>
> It’s already in bsdinstall… moving it into the boot process earlier on seems like an acceptable thing to do.
>
> Thanks!

That is fucking brilliant... seriously.

If you user picks "no" you can just make a sentinal file (that expert 
users can make be default if they are rolling their own releases).

-Alfred