From owner-freebsd-net@FreeBSD.ORG  Mon Jun 17 23:57:10 2013
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id 354D5D81;
 Mon, 17 Jun 2013 23:57:10 +0000 (UTC)
 (envelope-from lists@rewt.org.uk)
Received: from hosted.mx.as41113.net (hosted.mx.as41113.net [91.208.177.22])
 by mx1.freebsd.org (Postfix) with ESMTP id F2CB81895;
 Mon, 17 Jun 2013 23:57:09 +0000 (UTC)
Received: from [172.16.9.23] (bella.stf.rewt.org.uk [91.208.177.62])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (No client certificate requested)
 (Authenticated sender: lists@rewt.org.uk)
 by hosted.mx.as41113.net (Postfix) with ESMTPSA id 3bZ8V62RTLz6d;
 Tue, 18 Jun 2013 00:57:01 +0100 (BST)
Message-ID: <51BFA24D.70705@rewt.org.uk>
Date: Tue, 18 Jun 2013 00:57:01 +0100
From: Joe Holden <lists@rewt.org.uk>
User-Agent: Thunderbird 2.0.0.24 (Windows/20100228)
MIME-Version: 1.0
To: Jason Hellenthal <jhellenthal@dataix.net>
Subject: Re: How not allow setting ip changes interface down status?
References: <CAARSjE2FVkOr6yxUnnFjD4zYBVzkoEcOmEONzVqK+3wEor+HhA@mail.gmail.com>
 <CAJ-VmomUWn+6dg2ScWh=HdjygNczoy8xDvRK71z5cEob=bRAEw@mail.gmail.com>
 <69CF1AAF-230D-4B2B-9C95-20DDD772997E@dataix.net>
 <CAFOYbcnW01g7-tp89DoNDRzKWb+kuL8H2L1jegqRyVYt1O4-7g@mail.gmail.com>
 <CC186284-703C-412F-B867-C3F4DE7812EA@dataix.net>
In-Reply-To: <CC186284-703C-412F-B867-C3F4DE7812EA@dataix.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: h bagade <bagadeh@gmail.com>,
 "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
 Adrian Chadd <adrian@freebsd.org>, Jack Vogel <jfvogel@gmail.com>
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 17 Jun 2013 23:57:10 -0000

Jason Hellenthal wrote:
> Off the top of my head I don't know of another OS that does this.
> 
> But yes agreed changing that behavior would probably effect a lot of people in a negative way at this point.
> 
> Not to mention script breakage.
> 
> But a tunable in the stack somewhere would be awesome to change this behavior. Either interface specific or global or both.
> 
> Sometimes installing a new faucet you don't want the water to run until all the nuts, bolts and washers are installed.
> 
The entire notion is ridiculous, it is quite simple - if the interface 
is down, it isn't in the FIB, you can't arbitarily return an error for 
setting an IP on an interface that isn't up.

The last thing we need is yet more nonsense stack changes, allowing 0/8 
to be used was bad enough.