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Date: Wed, 31 Dec 2014 08:48:01 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Glen Barber <gjb@FreeBSD.org>
Subject: Re: How to make a FreeBSD vm in virtualbox.
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Cc: hackers@freebsd.org, Ryan Kois <ryan.kois@gmail.com>,
 Alfred Perlstein <alfred@freebsd.org>, re@freebsd.org,
 Claudia Yadathi <yadathi@gmail.com>
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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?