From owner-freebsd-questions  Mon Aug 24 18:30:33 1998
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id SAA09963
          for freebsd-questions-outgoing; Mon, 24 Aug 1998 18:30:33 -0700 (PDT)
          (envelope-from owner-freebsd-questions@FreeBSD.ORG)
Received: from sirius.ctr.columbia.edu (sirius.ctr.columbia.edu [128.59.64.60])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA09958
          for <freebsd-questions@FreeBSD.ORG>; Mon, 24 Aug 1998 18:30:32 -0700 (PDT)
          (envelope-from xwang@comet.columbia.edu)
Received: from comet.columbia.edu (maraca.comet.columbia.edu [128.59.68.77]) by sirius.ctr.columbia.edu (8.9.1/8.6.4.287) with ESMTP id VAA24008; Mon, 24 Aug 1998 21:29:45 -0400 (EDT)
Received: from localhost (xwang@localhost)
	by comet.columbia.edu (8.8.5/8.8.7/COMET) with SMTP id VAA10407;
	Mon, 24 Aug 1998 21:29:44 -0400 (EDT)
X-Authentication-Warning: maraca.comet.columbia.edu: xwang owned process doing -bs
Date: Mon, 24 Aug 1998 21:29:44 -0400 (EDT)
From: Xin Wang <xwang@comet.columbia.edu>
To: ngtrans@sunroof.eng.sun.com
cc: freebsd-questions@FreeBSD.ORG
Subject: Router Alert
Message-ID: <Pine.GSO.3.95q.980824211552.8069N-100000@maraca>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG


I would like to know how router alert is taken care in the
implementation at router/kernal when
a Router Alert option is given in a packet. 
And how an application program should do for getting the 
the packets besides setting alert option and forward the packet out
after the processing.

I understand currently IGMP and RSVP need Router Alert.
If I need to insert some messages at router into selected application
packets encapsulated in UDP, can I do that? 

Thanks,

Xin


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message