From owner-freebsd-bugs@FreeBSD.ORG Sat May 21 14:00:27 2011 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3472910656AD for ; Sat, 21 May 2011 14:00:27 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id B40728FC1F for ; Sat, 21 May 2011 14:00:21 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id p4LE0LUS050968 for ; Sat, 21 May 2011 14:00:21 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p4LE0LNW050967; Sat, 21 May 2011 14:00:21 GMT (envelope-from gnats) Resent-Date: Sat, 21 May 2011 14:00:21 GMT Resent-Message-Id: <201105211400.p4LE0LNW050967@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Jan Bramkamp Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 01AC5106566B for ; Sat, 21 May 2011 13:58:15 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id E650F8FC0C for ; Sat, 21 May 2011 13:58:14 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.4/8.14.4) with ESMTP id p4LDwEDa035687 for ; Sat, 21 May 2011 13:58:14 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.4/8.14.4/Submit) id p4LDwE1c035686; Sat, 21 May 2011 13:58:14 GMT (envelope-from nobody) Message-Id: <201105211358.p4LDwE1c035686@red.freebsd.org> Date: Sat, 21 May 2011 13:58:14 GMT From: Jan Bramkamp To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/157239: ipfw + dummynet corrupts ipv6 packets X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 May 2011 14:00:27 -0000 >Number: 157239 >Category: kern >Synopsis: ipfw + dummynet corrupts ipv6 packets >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat May 21 14:00:21 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Jan Bramkamp >Release: 8.2-RELEASE >Organization: >Environment: FreeBSD test7.crest.dn42 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 >Description: Setting two boxes up as described 'how to repeat' results in all IPv6 packets matching rule 100 leaving corrupted with invalid IPv6 option headers (header type = 64 or 255). >How-To-Repeat: # Reproduce 8.2-RELEASE amd64 # on both boxes /etc/rc.conf # ipv6_enable="YES" # ipv6_gateway_enable="YES" # box1 <--ethernet--> box2 # box1: ifconfig em0 inet6 fc00::1 # box2: ifconfig re0 inet6 fc00::2 # box1: ping6 fc00::2 # works, tcpdump shows icmp6 traffic # box1: ping6 fc00::2 # works, tcpdump shows icmp6 traffic # box1: kldload ipfw && kldload dummynet ipfw pipe 1 config ipfw add 100 pipe 1 ip6 from fc00::/64 to fc00::/64 out via em0 ipfw add 200 allow ip from any to any # box2: ping6 fc00::2 # broken # box1: ping6 fc00::1 # broken # box1: sysctl net.inet.ip.fw.one_pass=0 sysctl net.inet6.ip6.fw.deny_unknown_exthdrs=0 # packets leave corrupted >Fix: unknown >Release-Note: >Audit-Trail: >Unformatted: