From owner-freebsd-net Wed Aug 21 16:13:33 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BA6B637B400 for ; Wed, 21 Aug 2002 16:13:30 -0700 (PDT) Received: from rwcrmhc52.attbi.com (rwcrmhc52.attbi.com [216.148.227.88]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3CBCA43E7B for ; Wed, 21 Aug 2002 16:13:30 -0700 (PDT) (envelope-from crist.clark@attbi.com) Received: from blossom.cjclark.org ([12.234.91.48]) by rwcrmhc52.attbi.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP id <20020821231329.NYLN1186.rwcrmhc52.attbi.com@blossom.cjclark.org>; Wed, 21 Aug 2002 23:13:29 +0000 Received: from blossom.cjclark.org (localhost. [127.0.0.1]) by blossom.cjclark.org (8.12.3/8.12.3) with ESMTP id g7LNDTJK075886; Wed, 21 Aug 2002 16:13:29 -0700 (PDT) (envelope-from crist.clark@attbi.com) Received: (from cjc@localhost) by blossom.cjclark.org (8.12.3/8.12.3/Submit) id g7LNDSaI075885; Wed, 21 Aug 2002 16:13:28 -0700 (PDT) X-Authentication-Warning: blossom.cjclark.org: cjc set sender to crist.clark@attbi.com using -f Date: Wed, 21 Aug 2002 16:13:28 -0700 From: "Crist J. Clark" To: Lars Eggert Cc: Barney Wolff , net@FreeBSD.org Subject: Re: Bridging when one interface has no carrier Message-ID: <20020821231328.GA74544@blossom.cjclark.org> Reply-To: "Crist J. Clark" References: <3D61224B.2020902@isi.edu> <20020819102951.A38869@iguana.icir.org> <3D612D6A.9020604@isi.edu> <20020819181919.GA9000@tp.databus.com> <3D613D5B.10507@isi.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3D613D5B.10507@isi.edu> User-Agent: Mutt/1.4i X-URL: http://people.freebsd.org/~cjc/ Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Mon, Aug 19, 2002 at 11:47:55AM -0700, Lars Eggert wrote: > Barney Wolff wrote: > >I don't recall that FreeBSD has ever had the "strong host model" > >property and (as I just confirmed by test) it doesn't have it now. > > For IP, it doesn't, and never has. Packets destined for any local IP > address are accepted (by IP), no matter which interface the come in over. We have had, net.inet.ip.check_interface Which does, /* * XXX - Setting ip_checkinterface mostly implements the receive side of * the Strong ES model described in RFC 1122, but since the routing table * and transmit implementation do not implement the Strong ES model, * setting this to 1 results in an odd hybrid. * * XXX - ip_checkinterface currently must be disabled if you use ipnat * to translate the destination address to another local interface. * * XXX - ip_checkinterface must be disabled if you add IP aliases * to the loopback interface instead of the interface where the * packets for those addresses are received. */ For a while now. -- Crist J. Clark | cjclark@alum.mit.edu | cjclark@jhu.edu http://people.freebsd.org/~cjc/ | cjc@freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message