From owner-freebsd-net@FreeBSD.ORG Thu Jun 19 09:12:12 2014 Return-Path: Delivered-To: freebsd-net@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 0C967C2B for ; Thu, 19 Jun 2014 09:12:12 +0000 (UTC) Received: from mail.allbsd.org (gatekeeper.allbsd.org [IPv6:2001:2f0:104:e001::32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.allbsd.org", Issuer "RapidSSL CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id B3B4A290A for ; Thu, 19 Jun 2014 09:12:10 +0000 (UTC) Received: from alph.d.allbsd.org ([IPv6:2001:2f0:104:e010:862b:2bff:febc:8956]) (authenticated bits=56) by mail.allbsd.org (8.14.8/8.14.8) with ESMTP id s5J9Bp0n089603 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 19 Jun 2014 18:12:02 +0900 (JST) (envelope-from hrs@FreeBSD.org) Received: from localhost (localhost [IPv6:::1]) (authenticated bits=0) by alph.d.allbsd.org (8.14.8/8.14.8) with ESMTP id s5J9BntA063515; Thu, 19 Jun 2014 18:11:50 +0900 (JST) (envelope-from hrs@FreeBSD.org) Date: Thu, 19 Jun 2014 18:11:29 +0900 (JST) Message-Id: <20140619.181129.1279477227287764712.hrs@allbsd.org> To: ler@lerctr.org Subject: Re: IPv6: "xxx::x already configured" in logs... why? From: Hiroki Sato In-Reply-To: <20140612202349.GA65079@thebighonker.lerctr.org> References: <20140612202349.GA65079@thebighonker.lerctr.org> X-PGPkey-fingerprint: BDB3 443F A5DD B3D0 A530 FFD7 4F2C D3D8 2793 CF2D X-Mailer: Mew version 6.5 on Emacs 24.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Multipart/Signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="--Security_Multipart(Thu_Jun_19_18_11_29_2014_347)--" Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.97.4 at gatekeeper.allbsd.org X-Virus-Status: Clean X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (mail.allbsd.org [IPv6:2001:2f0:104:e001::32]); Thu, 19 Jun 2014 18:12:02 +0900 (JST) X-Spam-Status: No, score=-97.9 required=13.0 tests=CONTENT_TYPE_PRESENT, RDNS_NONE,SPF_SOFTFAIL,USER_IN_WHITELIST autolearn=no version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on gatekeeper.allbsd.org Cc: freebsd-net@freebsd.org X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18 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, 19 Jun 2014 09:12:12 -0000 ----Security_Multipart(Thu_Jun_19_18_11_29_2014_347)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Larry Rosenman wrote in <20140612202349.GA65079@thebighonker.lerctr.org>: le> I just started using IPv6 behind my (new to me) Cisco 1841. le> le> I see lots of: le> Jun 12 15:16:25 thebighonker kernel: in6_ifadd: 2001:470:1f0f:3ad:223:7dff:fe9e:6e8a is already configured le> le> in my /var/log/messages. le> le> The rc.conf: le> le> cloned_interfaces="lagg0:sticky " le> create_args_lagg0="laggport bce0 laggport bce1 laggproto loadbalance" le> ifconfig_lagg0="192.147.25.65/24" le> ifconfig_bce0="up" le> ifconfig_bce1="up" le> defaultrouter="192.147.25.1" le> #################################################### le> # IPv6 AutoConf: le> ifconfig_lagg0_ipv6="inet6 accept_rtadv" le> rtsold_enable="YES" le> #################################################### le> hostname=thebighonker.lerctr.org le> ifconfig_lagg0_alias0="inet 192.147.25.45/24" le> ifconfig_lagg0_alias1="inet 192.147.25.11/24" le> ifconfig_lagg0_alias2="inet 192.147.25.66/24" le> sshd_enable="YES" le> ntpd_enable="YES" le> powerd_enable="YES" le> # Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable le> dumpdev="AUTO" le> zfs_enable="YES" le> # ------------ le> le> le> hostid_enable="YES" le> le> postgresql_enable="YES" le> fah_enable="NO" le> fah2_enable="NO" le> linux_enable="YES" le> smartd_enable="YES" le> spamd_enable="YES" le> devcpu_enable="YES" le> clamav_clamd_enable="YES" le> clamav_freshclam_enable="YES" le> sendmail_enable="NONE" le> exim_enable="YES" le> exim_flags="-bd -q5m" le> named_enable="YES" le> named_program="/usr/local/sbin/named" le> bsdstats_enable="YES" le> spamd_flags="-c -Q -m 20" le> apache22_enable="YES" le> syslogd_flags="-n -a 192.147.25.0/24:* -a 209.198.148.248/29:*" le> bacula_fd_enable="YES" le> sshblock_enable="YES" le> dovecot_enable="YES" le> monthly_stats_enable="YES" le> boinc_client_enable="YES" le> microcode_update_enable="YES" le> ---- le> sysctl.conf: le> le> # $FreeBSD: stable/10/etc/sysctl.conf 112200 2003-03-13 18:43:50Z mux $ le> # le> # This file is read when going to multi-user and its contents piped thru le> # ``sysctl'' to adjust kernel values. ``man 5 sysctl.conf'' for details. le> # le> le> # Uncomment this to prevent users from seeing information about processes that le> # are being run under another UID. le> #security.bsd.see_other_uids=0 le> vm.lowmem_period=0 le> vfs.usermount=1 le> vfs.zfs.super_owner=1 le> kern.elf32.fallback_brand=3 le> kern.ipc.shm_allow_removed=1 le> net.inet6.ip6.dad_count=0 le> le> ===== le> le> Ideas? (I may be an idiot, so any criticism welcomed). le> le> if you need the 1841's config, I can supply that as well. It's using a Hurricane le> electric Tunnel. How frequent were the log message added into /var/log/messages? And when did it start to happen after boot. Just after lagg0 is configured? -- Hiroki ----Security_Multipart(Thu_Jun_19_18_11_29_2014_347)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEABECAAYFAlOiqUEACgkQTyzT2CeTzy14QQCfQwaPp+Npq/VZXP3ZZmfMurr3 qKEAoJYfD0ubKVJRkK/L3QIZ+uciILHi =XEtX -----END PGP SIGNATURE----- ----Security_Multipart(Thu_Jun_19_18_11_29_2014_347)----