From owner-freebsd-net@freebsd.org Sat Dec 3 09:53:00 2016 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3EC4AC6257C for ; Sat, 3 Dec 2016 09:53:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2E832B95 for ; Sat, 3 Dec 2016 09:53:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id uB39r0Pv028657 for ; Sat, 3 Dec 2016 09:53:00 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 214746] Carp ipv6 duplicate address detection Date: Sat, 03 Dec 2016 09:53:00 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 10.3-RELEASE X-Bugzilla-Keywords: needs-qa X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: aduitsis@douitsis.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Dec 2016 09:53:00 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214746 --- Comment #2 from Athanasios Douitsis --- (In reply to Kubilay Kocak from comment #1) Running FreeBSD 10.3-RELEASE-p11 #0: Mon Oct 24 18:49:24 UTC 2016 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 on b= oth nodes. This works (dead:beef instead of my real prefix): ifconfig_vmx0_ipv6=3D"inet6 accept_rtadv dead:beef::60/64" ifconfig_vmx0_alias1=3D"inet6 dead:beef::95/64 no_dad vhid 34 pass bar=E2= =80=9D dead:beef::60 is node0 and dead:beef::61 is node1. Both have dead:beef::95/= 64 as the common carp IPv6 address. Vhid 34 is randomly chosen.=20 For IPv4, I'm using a different vhid and pass, just to be on the safe side. Removing the no_dad from ifconfig_vmx0_alias1 and rebooting the BACKUP node causes the problem to appear. Backup node will compain about DAD upon reboo= t, ifconfig will say dead:beef::95/64 duplicated, so it can't really be used.= =20 Afterwards, trying to manualy issue=20 ifconfig inet6 dead:beef::95/64 vhid 34 pass bar will fail the first time, second time it will go through. --=20 You are receiving this mail because: You are the assignee for the bug.=