From owner-freebsd-net@FreeBSD.ORG Thu Jan 16 11:37:43 2014 Return-Path: Delivered-To: freebsd-net@smarthost.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 442C1436; Thu, 16 Jan 2014 11:37:43 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 18E791E98; Thu, 16 Jan 2014 11:37:43 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id s0GBbgiv094516; Thu, 16 Jan 2014 11:37:42 GMT (envelope-from melifaro@freefall.freebsd.org) Received: (from melifaro@localhost) by freefall.freebsd.org (8.14.7/8.14.7/Submit) id s0GBbgh4094515; Thu, 16 Jan 2014 11:37:42 GMT (envelope-from melifaro) Date: Thu, 16 Jan 2014 11:37:42 GMT Message-Id: <201401161137.s0GBbgh4094515@freefall.freebsd.org> To: melifaro@FreeBSD.org, freebsd-ipfw@FreeBSD.org, freebsd-net@FreeBSD.org From: melifaro@FreeBSD.org Subject: Re: kern/129036: [ipfw] 'ipfw fwd' does not change outgoing interface name X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.17 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, 16 Jan 2014 11:37:43 -0000 Synopsis: [ipfw] 'ipfw fwd' does not change outgoing interface name Responsible-Changed-From-To: freebsd-ipfw->freebsd-net Responsible-Changed-By: melifaro Responsible-Changed-When: Thu Jan 16 11:31:08 UTC 2014 Responsible-Changed-Why: Reclassify. This problem is not related to ipfw: ipfw(4) sets M_IP_NEXTHOP & adds PACKET_TAG_IPFORWARD on ingress and returns. ip_input() sees M_IP_NEXTHOP and passes packet to ip_forward() which performs routing decision and calls ip_output(). Finally, ip_ouput() calls PFIL hook with ifp determined by ip_forward() and checks M_IP_NEXTHOP _after_ that. http://www.freebsd.org/cgi/query-pr.cgi?pr=129036