From owner-freebsd-net@FreeBSD.ORG Thu Oct 25 19:07:41 2007 Return-Path: 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 B5CAD16A41B for ; Thu, 25 Oct 2007 19:07:41 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from mail34.syd.optusnet.com.au (mail34.syd.optusnet.com.au [211.29.133.218]) by mx1.freebsd.org (Postfix) with ESMTP id 3DD8413C4A6 for ; Thu, 25 Oct 2007 19:07:41 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from server.vk2pj.dyndns.org (c220-239-20-82.belrs4.nsw.optusnet.com.au [220.239.20.82]) by mail34.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id l9PJ7bEd003801 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 26 Oct 2007 05:07:39 +1000 Received: from server.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by server.vk2pj.dyndns.org (8.14.1/8.14.1) with ESMTP id l9PJ7ban094840; Fri, 26 Oct 2007 05:07:37 +1000 (EST) (envelope-from peter@server.vk2pj.dyndns.org) Received: (from peter@localhost) by server.vk2pj.dyndns.org (8.14.1/8.14.1/Submit) id l9PJ7bfs094839; Fri, 26 Oct 2007 05:07:37 +1000 (EST) (envelope-from peter) Date: Fri, 26 Oct 2007 05:07:36 +1000 From: Peter Jeremy To: Stephen Clark Message-ID: <20071025190736.GE70883@server.vk2pj.dyndns.org> References: <471F8C41.7030503@seclark.us> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="vOmOzSkFvhd7u8Ms" Content-Disposition: inline In-Reply-To: <471F8C41.7030503@seclark.us> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.16 (2007-06-09) Cc: freebsd-net@freebsd.org Subject: Re: proxy arp on 6.1 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Oct 2007 19:07:41 -0000 --vOmOzSkFvhd7u8Ms Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Oct 24, 2007 at 02:17:37PM -0400, Stephen Clark wrote: >I must be doing something wrong. I can't seem to get proxy arp to work. Is= =20 >there some magic. I've been using proxy ARP on FreeBSD between 4.x and 6.2 without problems (though I think I skipped 6.1). >I have the following setup isp router 205.x.x.1 <-> 205.x.x.100/25 rl1=20 >freebsd vr0 205.x.x.129/25 ><-> 205.x.x.193/25 >arp -an >(205.x.x.1) at 00:13:7f:5a:b5:50 on rl1 [ethernet] >(205.x.x.193) at 00:30:18:a3:44:2d on vr0 permanent published (proxy only)= =20 >[ethernet] > >tcpdump >13:09:51.386793 arp who-has 205.x.x.193 tell 205.x.x.1 Which interface is being dumped and what does 'ifconfig vr0' show? If you are dumping the rl0 interface then my suspicion is that the subnet on 205.x.x.1 is wrong: 205.x.x.193 is not the same subnet as 205.x.x.1/25 so 205.x.x.1 should not be doing ARP requests for it, it should be accessing it via a gateway (router). --=20 As a computing professional, I believe it would be unethical for me to advise, recommend, or support the use (save possibly for personal amusement) of any product that is or depends on any Microsoft product. --vOmOzSkFvhd7u8Ms Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHIOl4/opHv/APuIcRAu5TAKCgjLDItH5O6Ci0SS8B5tw2EgnZYgCeO5dl T4kEe6Gt6QuB5boZzRiafxU= =iEWV -----END PGP SIGNATURE----- --vOmOzSkFvhd7u8Ms--