From owner-freebsd-net@FreeBSD.ORG Fri Jun 20 12:45:57 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5A08E854; Fri, 20 Jun 2014 12:45:57 +0000 (UTC) Received: from thebighonker.lerctr.org (thebighonker.lerctr.org [IPv6:2001:470:1f0f:3ad:223:7dff:fe9e:6e8a]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "thebighonker.lerctr.org", Issuer "COMODO RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 27E4A2D9D; Fri, 20 Jun 2014 12:45:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lerctr.org; s=lerami; h=Message-ID:References:In-Reply-To:Subject:Cc:To:From:Date:Content-Transfer-Encoding:Content-Type:MIME-Version; bh=+ZyZUjPzLdvLGIIqB2V/4VykFXaShGgsmpys9rqpLO4=; b=DUxvFu6x2SvWEDy89jEiJxO/QuXXg2a7l50WOL+0lgAtEYkOvDKwbUIFwtD5ZkGyuKy6Nc0OxVlizuEuln89M9/5I0BdHAgPcasfENg53LtC1LNRTY1gVR524h2L+Op+vDjnb7lecnc2Ki+mV7tZdf59p7Jkpp2afOjhUpOgTLw=; Received: from localhost.lerctr.org ([127.0.0.1]:18657 helo=webmail.lerctr.org) by thebighonker.lerctr.org with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82 (FreeBSD)) (envelope-from ) id 1WxyCY-0007w9-8z; Fri, 20 Jun 2014 07:45:56 -0500 Received: from ool-4b7f879a.static.optonline.net ([75.127.135.154]) by webmail.lerctr.org with HTTP (HTTP/1.1 POST); Fri, 20 Jun 2014 07:45:54 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 20 Jun 2014 07:45:54 -0500 From: Larry Rosenman To: Hiroki Sato Subject: Re: IPv6: "xxx::x already configured" in logs... =?UTF-8?Q?why=3F?= In-Reply-To: <20140620.130812.1612764660960146940.hrs@allbsd.org> References: <20140612202349.GA65079@thebighonker.lerctr.org> <20140619.181129.1279477227287764712.hrs@allbsd.org> <20140619140801.GA65420@thebighonker.lerctr.org> <20140620.130812.1612764660960146940.hrs@allbsd.org> Message-ID: <0c5bc901eba87f35e58390b686cee5ab@thebighonker.lerctr.org> X-Sender: ler@lerctr.org User-Agent: Roundcube Webmail/1.0.1 X-Spam-Score: -2.9 (--) X-LERCTR-Spam-Score: -2.9 (--) X-Spam-Report: SpamScore (-2.9/5.0) ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 X-LERCTR-Spam-Report: SpamScore (-2.9/5.0) ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 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: Fri, 20 Jun 2014 12:45:57 -0000 On 2014-06-19 23:08, Hiroki Sato wrote: > Larry Rosenman wrote > in <20140619140801.GA65420@thebighonker.lerctr.org>: > > le> > le> Ideas? (I may be an idiot, so any criticism welcomed). > le> > le> > le> > le> if you need the 1841's config, I can supply that as well. > It's using a Hurricane > le> > le> electric Tunnel. > le> > > le> > How frequent were the log message added into /var/log/messages? > And > le> > when did it start to happen after boot. Just after lagg0 is > le> > configured? > le> > > le> > -- Hiroki > le> Looks like: > le> > le> Jun 12 07:00:01 thebighonker kernel: in6_ifadd: > 2001:470:1f0f:3ad:223:7dff:fe9e:6e8a is already configured > > Thank you. Three more questions: > > 1. output of "ifconfig lagg0", "ifconfig bce0", and "ifconfig bce1". > > 2. output of "netstat -s -i". > > 3. output of "ndp -p". > > The cause of the message is that the automatically-configured address > is not recognized as "configured" one and FreeBSD IPv6 stack is > trying to add it every time a Router Advertisement message is > received. I am still not sure why it happened, but the above three > would help for further investigation. > > -- Hiroki I updated the system from r267121M to r267653M and rebooted. The issue does NOT occur at this level. thebighonker.lerctr.org /etc/rc.d $ ifconfig lagg0 lagg0: flags=8843 metric 0 mtu 1500 options=c01bb ether 00:23:7d:9e:6e:8a inet 192.147.25.65 netmask 0xffffff00 broadcast 192.147.25.255 inet6 fe80::223:7dff:fe9e:6e8a%lagg0 prefixlen 64 scopeid 0x4 inet 192.147.25.45 netmask 0xffffff00 broadcast 192.147.25.255 inet 192.147.25.11 netmask 0xffffff00 broadcast 192.147.25.255 inet 192.147.25.66 netmask 0xffffff00 broadcast 192.147.25.255 inet6 2001:470:1f0f:3ad:223:7dff:fe9e:6e8a prefixlen 64 autoconf nd6 options=23 media: Ethernet autoselect status: active laggproto loadbalance lagghash l2,l3,l4 laggport: bce1 flags=4 laggport: bce0 flags=4 thebighonker.lerctr.org /etc/rc.d $ ifconfig bce0 bce0: flags=8843 metric 0 mtu 1500 options=c01bb ether 00:23:7d:9e:6e:8a inet6 fe80::223:7dff:fe9e:6e8a%bce0 prefixlen 64 tentative scopeid 0x1 nd6 options=29 media: Ethernet autoselect (1000baseT ) status: active thebighonker.lerctr.org /etc/rc.d $ ifconfig bce1 bce1: flags=8843 metric 0 mtu 1500 options=c01bb ether 00:23:7d:9e:6e:8a inet6 fe80::223:7dff:fe9e:6e8a%bce1 prefixlen 64 tentative scopeid 0x2 nd6 options=29 media: Ethernet autoselect (1000baseT ) status: active thebighonker.lerctr.org /etc/rc.d $ thebighonker.lerctr.org /etc/rc.d $ netstat -s -i ip6 on bce0: 0 total input datagrams 0 datagrams with invalid header received 0 datagrams exceeded MTU received 0 datagrams with no route received 0 datagrams with invalid dst received 0 datagrams with unknown proto received 0 truncated datagrams received 0 input datagrams discarded 0 datagrams delivered to an upper layer protocol 0 datagrams forwarded to this interface 4 datagrams sent from an upper layer protocol 0 total discarded output datagrams 0 output datagrams fragmented 0 output datagrams failed on fragment 0 output datagrams succeeded on fragment 0 incoming datagrams fragmented 0 datagrams reassembled 0 datagrams failed on reassembly 0 multicast datagrams received 4 multicast datagrams sent ip6 on bce1: 0 total input datagrams 0 datagrams with invalid header received 0 datagrams exceeded MTU received 0 datagrams with no route received 0 datagrams with invalid dst received 0 datagrams with unknown proto received 0 truncated datagrams received 0 input datagrams discarded 0 datagrams delivered to an upper layer protocol 0 datagrams forwarded to this interface 4 datagrams sent from an upper layer protocol 0 total discarded output datagrams 0 output datagrams fragmented 0 output datagrams failed on fragment 0 output datagrams succeeded on fragment 0 incoming datagrams fragmented 0 datagrams reassembled 0 datagrams failed on reassembly 0 multicast datagrams received 4 multicast datagrams sent ip6 on lo0: 45224 total input datagrams 0 datagrams with invalid header received 0 datagrams exceeded MTU received 0 datagrams with no route received 0 datagrams with invalid dst received 0 datagrams with unknown proto received 0 truncated datagrams received 0 input datagrams discarded 45224 datagrams delivered to an upper layer protocol 0 datagrams forwarded to this interface 45224 datagrams sent from an upper layer protocol 0 total discarded output datagrams 0 output datagrams fragmented 0 output datagrams failed on fragment 0 output datagrams succeeded on fragment 0 incoming datagrams fragmented 0 datagrams reassembled 0 datagrams failed on reassembly 0 multicast datagrams received 0 multicast datagrams sent ip6 on lagg0: 66698 total input datagrams 0 datagrams with invalid header received 0 datagrams exceeded MTU received 0 datagrams with no route received 0 datagrams with invalid dst received 0 datagrams with unknown proto received 0 truncated datagrams received 1 input datagram discarded 66698 datagrams delivered to an upper layer protocol 0 datagrams forwarded to this interface 70844 datagrams sent from an upper layer protocol 0 total discarded output datagrams 1505 output datagrams fragmented 0 output datagrams failed on fragment 3037 output datagrams succeeded on fragment 477 incoming datagrams fragmented 224 datagrams reassembled 0 datagrams failed on reassembly 498 multicast datagrams received 3 multicast datagrams sent icmp6 on bce0: 0 total input messages 0 total input error messages 0 input destination unreachable errors 0 input administratively prohibited errors 0 input time exceeded errors 0 input parameter problem errors 0 input packet too big errors 0 input echo requests 0 input echo replies 0 input router solicitations 0 input router advertisements 0 input neighbor solicitations 0 input neighbor advertisements 0 input redirects 0 input MLD queries 0 input MLD reports 0 input MLD dones 0 total output messages 0 total output error messages 0 output destination unreachable errors 0 output administratively prohibited errors 0 output time exceeded errors 0 output parameter problem errors 0 output packet too big errors 0 output echo requests 0 output echo replies 0 output router solicitations 0 output router advertisements 0 output neighbor solicitations 0 output neighbor advertisements 0 output redirects 0 output MLD queries 0 output MLD reports 0 output MLD dones icmp6 on bce1: 0 total input messages 0 total input error messages 0 input destination unreachable errors 0 input administratively prohibited errors 0 input time exceeded errors 0 input parameter problem errors 0 input packet too big errors 0 input echo requests 0 input echo replies 0 input router solicitations 0 input router advertisements 0 input neighbor solicitations 0 input neighbor advertisements 0 input redirects 0 input MLD queries 0 input MLD reports 0 input MLD dones 0 total output messages 0 total output error messages 0 output destination unreachable errors 0 output administratively prohibited errors 0 output time exceeded errors 0 output parameter problem errors 0 output packet too big errors 0 output echo requests 0 output echo replies 0 output router solicitations 0 output router advertisements 0 output neighbor solicitations 0 output neighbor advertisements 0 output redirects 0 output MLD queries 0 output MLD reports 0 output MLD dones icmp6 on lo0: 4 total input messages 4 total input error messages 4 input destination unreachable errors 0 input administratively prohibited errors 0 input time exceeded errors 0 input parameter problem errors 0 input packet too big errors 0 input echo requests 0 input echo replies 0 input router solicitations 0 input router advertisements 0 input neighbor solicitations 0 input neighbor advertisements 0 input redirects 0 input MLD queries 0 input MLD reports 0 input MLD dones 4 total output messages 4 total output error messages 4 output destination unreachable errors 0 output administratively prohibited errors 0 output time exceeded errors 0 output parameter problem errors 0 output packet too big errors 0 output echo requests 0 output echo replies 0 output router solicitations 0 output router advertisements 0 output neighbor solicitations 0 output neighbor advertisements 0 output redirects 0 output MLD queries 0 output MLD reports 0 output MLD dones icmp6 on lagg0: 3475 total input messages 10 total input error messages 0 input destination unreachable errors 0 input administratively prohibited errors 0 input time exceeded errors 0 input parameter problem errors 10 input packet too big errors 0 input echo requests 6 input echo replies 0 input router solicitations 495 input router advertisements 1895 input neighbor solicitations 1069 input neighbor advertisements 0 input redirects 0 input MLD queries 0 input MLD reports 0 input MLD dones 2994 total output messages 22 total output error messages 22 output destination unreachable errors 0 output administratively prohibited errors 0 output time exceeded errors 0 output parameter problem errors 0 output packet too big errors 6 output echo requests 0 output echo replies 1 output router solicitation 0 output router advertisements 1069 output neighbor solicitations 1895 output neighbor advertisements 0 output redirects 0 output MLD queries 1 output MLD report 0 output MLD dones thebighonker.lerctr.org /etc/rc.d $ thebighonker.lerctr.org /etc/rc.d $ ndp -p 2001:470:1f0f:3ad::/64 if=lagg0 flags=LAO vltime=2592000, pltime=604800, expire=29d23h57m21s, ref=1 advertised by fe80::218:18ff:fe72:488%lagg0 (reachable) fe80::%lagg0/64 if=lagg0 flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0 No advertising router fe80::%bce1/64 if=bce1 flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0 No advertising router fe80::%bce0/64 if=bce0 flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0 No advertising router fe80::%lo0/64 if=lo0 flags=LAO vltime=infinity, pltime=infinity, expire=Never, ref=0 No advertising router thebighonker.lerctr.org /etc/rc.d $ The local mods are Karl Denninger's ZFS ARC patch. So, I'm not sure what to say at this point. -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: ler@lerctr.org US Mail: 108 Turvey Cove, Hutto, TX 78634-5688