From owner-freebsd-net@FreeBSD.ORG  Wed Jan 23 22:16:35 2008
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 9EA4C16A41B
	for <freebsd-net@freebsd.org>; Wed, 23 Jan 2008 22:16:35 +0000 (UTC)
	(envelope-from yousif@alumni.jmu.edu)
Received: from coruscant.far-far-away.us (coruscant.far-far-away.us
	[70.91.196.65]) by mx1.freebsd.org (Postfix) with SMTP id 3FA3813C465
	for <freebsd-net@freebsd.org>; Wed, 23 Jan 2008 22:16:34 +0000 (UTC)
	(envelope-from yousif@alumni.jmu.edu)
Received: (qmail 22888 invoked from network); 23 Jan 2008 16:44:08 -0500
Received: from pknat1.passkey.com (HELO ?192.168.16.168?) (68.162.198.134)
	by coruscant.far-far-away.us with SMTP; 23 Jan 2008 16:44:08 -0500
From: Yousif Hassan <yousif@alumni.jmu.edu>
To: freebsd-net@freebsd.org
Content-Type: text/plain
Date: Wed, 23 Jan 2008 16:50:22 -0500
Message-Id: <1201125022.2106.67.camel@localhost>
Mime-Version: 1.0
X-Mailer: Evolution 2.12.2 FreeBSD GNOME Team Port 
Content-Transfer-Encoding: 7bit
Subject: network interface monitoring?
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: Wed, 23 Jan 2008 22:16:35 -0000

Net-gurus:

I hope this is the right list to write to regarding this question (feel
free to redirect me to ports@ if that sounds more appropriate).

I'm looking for a facility to automatically detect network interface
carrier state changes (a network cable gets plugged/unplugged; a
laptop's wireless button gets turned on/off; etc.) and then to run a
user script on it.  The use case, fairly obvious I guess, is to execute
ifconfig and/or DHCP commands upon carrier detection; this will make my
laptop that much more useful. ;)

NetBSD has ifwatchd - which seems perfectly designed for this use case:
http://www.freebsd.org/cgi/man.cgi?query=ifwatchd&apropos=0&sektion=0&manpath=NetBSD+4.0

ifwatchd has not been ported to FreeBSD - does FreeBSD have anything
similar?

I can't imagine I'm the first to ask this question; it seems almost
everyone with a laptop would want this.

Thanks for your time/attention...!
(please CC me as I am not subscribed here)

--Yousif