From owner-freebsd-net@FreeBSD.ORG  Thu Mar  8 15:57:31 2007
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
X-Original-To: net@FreeBSD.org
Delivered-To: freebsd-net@FreeBSD.ORG
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id B352116A400
	for <net@FreeBSD.org>; Thu,  8 Mar 2007 15:57:31 +0000 (UTC)
	(envelope-from bms@FreeBSD.org)
Received: from out5.smtp.messagingengine.com (out5.smtp.messagingengine.com
	[66.111.4.29]) by mx1.freebsd.org (Postfix) with ESMTP id 8867713C461
	for <net@FreeBSD.org>; Thu,  8 Mar 2007 15:57:31 +0000 (UTC)
	(envelope-from bms@FreeBSD.org)
Received: from out1.internal (unknown [10.202.2.149])
	by out1.messagingengine.com (Postfix) with ESMTP id E35EE1F55AB
	for <net@FreeBSD.org>; Thu,  8 Mar 2007 10:57:30 -0500 (EST)
Received: from heartbeat1.messagingengine.com ([10.202.2.160])
	by out1.internal (MEProxy); Thu, 08 Mar 2007 10:57:30 -0500
X-Sasl-enc: bOAv+TKFpGlU4KmtllCuk/HQ1ncwuWslUpFNAdTkklhy 1173369451
Received: from [192.168.123.18]
	(82-35-112-254.cable.ubr07.dals.blueyonder.co.uk [82.35.112.254])
	by mail.messagingengine.com (Postfix) with ESMTP id E59FB18CF0
	for <net@FreeBSD.org>; Thu,  8 Mar 2007 10:57:30 -0500 (EST)
Message-ID: <45F03269.7050705@FreeBSD.org>
Date: Thu, 08 Mar 2007 15:57:29 +0000
From: "Bruce M. Simpson" <bms@FreeBSD.org>
User-Agent: Thunderbird 1.5.0.9 (X11/20070125)
MIME-Version: 1.0
To: net@FreeBSD.org
References: <45C0CA5D.5090903@incunabulum.net>	<45E6BEE0.2050307@FreeBSD.org>	<45E6C22D.7060200@freebsd.org>	<45E6D70C.10104@FreeBSD.org>
	<45EEB086.3050409@FreeBSD.org>
In-Reply-To: <45EEB086.3050409@FreeBSD.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: 
Subject: Re: Inconsistencies with IP_ONESBCAST and/or IP_SENDSRCADDR
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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: Thu, 08 Mar 2007 15:57:31 -0000

Bruce M. Simpson wrote:
> I have just committed a change in bms_netdev which enforces strict
> and better defined semantics for the IP_SENDSRCADDR option in 
> udp_output().
>

I have just committed this change in -CURRENT.

After testing it with 'ipbroadcast', it looks good apart from sockets 
which are already laddr bound. This is forbidden by in_pcbbind_setup(). 
The same caveats apply -- it might collide with an already bound inpcb.

It is OK for code to choose any source address configured on the box as 
this will be needed to override source selection come ECMP.

If someone else steps up to make it work when socket is laddr bound, 
well and cool. I now consider it 'fit for purpose'. I'm satisfied with 
this for now.

Regards,
BMS