From owner-freebsd-bugs Tue Jul 7 09:53:28 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id JAA26584 for freebsd-bugs-outgoing; Tue, 7 Jul 1998 09:53:28 -0700 (PDT) (envelope-from owner-freebsd-bugs@FreeBSD.ORG) Received: from implode.root.com (implode.root.com [198.145.90.17]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id JAA26576 for ; Tue, 7 Jul 1998 09:53:26 -0700 (PDT) (envelope-from root@implode.root.com) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.5/8.8.5) with ESMTP id JAA27173; Tue, 7 Jul 1998 09:52:32 -0700 (PDT) Message-Id: <199807071652.JAA27173@implode.root.com> To: Bill Fenner cc: sthomas@lart.net, freebsd-bugs@FreeBSD.ORG, phk@critter.freebsd.dk Subject: Re: kern/7191: FreeBSD 2.2.6 generates Source-route prohibited when not routing In-reply-to: Your message of "Tue, 07 Jul 1998 09:42:56 PDT." <98Jul7.094259pdt.177515@crevenia.parc.xerox.com> From: David Greenman Reply-To: dg@root.com Date: Tue, 07 Jul 1998 09:52:32 -0700 Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >I'm not sure I agree the ICMP message is bogus. It's true that RFC1122 >says that ICMP source route failed errors are only returned for >incomplete (i.e. in-transit) source routes, but it also says that >complete source routes MUST be passed up to the transport layer. Since >we're not passing the packet up to the transport layer, it makes sense >to send some kind of ICMP error. ...but hosts shouldn't send ICMP unreachables: A host MUST silently discard an incoming datagram that is not destined for the host. An incoming datagram is destined for the host if the datagram's destination address field is: So if ipforwarding is 0, and the packet isn't for the local machine, then it must be silently discarded. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message