From owner-freebsd-virtualization@FreeBSD.ORG Mon Aug 30 11:07:11 2010 Return-Path: Delivered-To: freebsd-virtualization@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AAC341065693 for ; Mon, 30 Aug 2010 11:07:11 +0000 (UTC) (envelope-from owner-bugmaster@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 9841F8FC08 for ; Mon, 30 Aug 2010 11:07:11 +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 o7UB7BlQ087600 for ; Mon, 30 Aug 2010 11:07:11 GMT (envelope-from owner-bugmaster@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o7UB7AxH087598 for freebsd-virtualization@FreeBSD.org; Mon, 30 Aug 2010 11:07:11 GMT (envelope-from owner-bugmaster@FreeBSD.org) Date: Mon, 30 Aug 2010 11:07:11 GMT Message-Id: <201008301107.o7UB7AxH087598@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: gnats set sender to owner-bugmaster@FreeBSD.org using -f From: FreeBSD bugmaster To: freebsd-virtualization@FreeBSD.org Cc: Subject: Current problem reports assigned to freebsd-virtualization@FreeBSD.org X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Aug 2010 11:07:11 -0000 Note: to view an individual PR, use: http://www.freebsd.org/cgi/query-pr.cgi?pr=(number). The following is a listing of current problems submitted by FreeBSD users. These represent problem reports covering all versions including experimental development code and obsolete releases. S Tracker Resp. Description -------------------------------------------------------------------------------- o kern/148155 virtualization[vimage] Kernel panic with PF/IPFilter + VIMAGE kernel o kern/147950 virtualization[vimage] [carp] VIMAGE + CARP = kernel crash s kern/143808 virtualization[pf] pf does not work inside jail o kern/141696 virtualization[rum] [panic] rum(4)+ vimage = kernel panic 4 problems total. From owner-freebsd-virtualization@FreeBSD.ORG Mon Aug 30 15:15:15 2010 Return-Path: Delivered-To: freebsd-virtualization@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 450351065694; Mon, 30 Aug 2010 15:15:15 +0000 (UTC) (envelope-from bz@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 1C8008FC14; Mon, 30 Aug 2010 15:15:15 +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 o7UFFEMH043737; Mon, 30 Aug 2010 15:15:14 GMT (envelope-from bz@freefall.freebsd.org) Received: (from bz@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o7UFFE5i043733; Mon, 30 Aug 2010 15:15:14 GMT (envelope-from bz) Date: Mon, 30 Aug 2010 15:15:14 GMT Message-Id: <201008301515.o7UFFE5i043733@freefall.freebsd.org> To: bz@FreeBSD.org, freebsd-virtualization@FreeBSD.org, bz@FreeBSD.org From: bz@FreeBSD.org Cc: Subject: Re: kern/147950: [vimage] [carp] VIMAGE + CARP = kernel crash X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Aug 2010 15:15:15 -0000 Synopsis: [vimage] [carp] VIMAGE + CARP = kernel crash Responsible-Changed-From-To: freebsd-virtualization->bz Responsible-Changed-By: bz Responsible-Changed-When: Mon Aug 30 15:14:04 UTC 2010 Responsible-Changed-Why: I have a virtualized carp(4) in perforce but it'll depend on other fixes. Meanwhile track. http://www.freebsd.org/cgi/query-pr.cgi?pr=147950 From owner-freebsd-virtualization@FreeBSD.ORG Mon Aug 30 15:16:52 2010 Return-Path: Delivered-To: freebsd-virtualization@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6585E10656A9; Mon, 30 Aug 2010 15:16:52 +0000 (UTC) (envelope-from bz@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 3D2348FC18; Mon, 30 Aug 2010 15:16:52 +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 o7UFGqmP043918; Mon, 30 Aug 2010 15:16:52 GMT (envelope-from bz@freefall.freebsd.org) Received: (from bz@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o7UFGqGZ043914; Mon, 30 Aug 2010 15:16:52 GMT (envelope-from bz) Date: Mon, 30 Aug 2010 15:16:52 GMT Message-Id: <201008301516.o7UFGqGZ043914@freefall.freebsd.org> To: bz@FreeBSD.org, freebsd-virtualization@FreeBSD.org, bz@FreeBSD.org From: bz@FreeBSD.org Cc: Subject: Re: kern/141696: [rum] [panic] rum(4)+ vimage = kernel panic X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Aug 2010 15:16:52 -0000 Synopsis: [rum] [panic] rum(4)+ vimage = kernel panic Responsible-Changed-From-To: freebsd-virtualization->bz Responsible-Changed-By: bz Responsible-Changed-When: Mon Aug 30 15:15:24 UTC 2010 Responsible-Changed-Why: I have a work in progress in perforce to fix USB-network device drivers, cardbus, ... and cloned interface. Track. http://www.freebsd.org/cgi/query-pr.cgi?pr=141696 From owner-freebsd-virtualization@FreeBSD.ORG Wed Sep 1 17:57:59 2010 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9481B1065695 for ; Wed, 1 Sep 2010 17:57:59 +0000 (UTC) (envelope-from frank@zzattack.org) Received: from mail-ew0-f54.google.com (mail-ew0-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id 2D24F8FC1B for ; Wed, 1 Sep 2010 17:57:58 +0000 (UTC) Received: by ewy4 with SMTP id 4so4980738ewy.13 for ; Wed, 01 Sep 2010 10:57:58 -0700 (PDT) Received: by 10.213.29.144 with SMTP id q16mr669233ebc.75.1283362461672; Wed, 01 Sep 2010 10:34:21 -0700 (PDT) Received: from [10.31.45.197] (21-78-ftth.onsneteindhoven.nl [88.159.78.21]) by mx.google.com with ESMTPS id z55sm16414129eeh.15.2010.09.01.10.34.20 (version=SSLv3 cipher=RC4-MD5); Wed, 01 Sep 2010 10:34:20 -0700 (PDT) Message-ID: <4C7E8E7C.7090708@zzattack.org> Date: Wed, 01 Sep 2010 19:33:48 +0200 From: Frank Razenberg User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-virtualization@freebsd.org Content-Type: multipart/mixed; boundary="------------060804080900050106070900" X-Mailman-Approved-At: Wed, 01 Sep 2010 19:38:41 +0000 Subject: duplicate epair ipv6 addresses X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Sep 2010 17:57:59 -0000 This is a multi-part message in MIME format. --------------060804080900050106070900 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi, I'm receiving some messages regarding a possibly duplicate IPv6 address when starting a vnet jail. I have 3 jails, and the second one get started is generating some errors. Starting the third one does not generate any similar error messages. I've pasted the relevant log sections below: fileserve's /var/log/messages Sep 1 17:16:08 fileserve sm-mta[2102]: NOQUEUE: SYSERR(root): opendaemonsocket: daemon Daemon0: cannot bind: Address already in use Sep 1 17:16:08 fileserve sm-mta[2102]: daemon Daemon0: problem creating SMTP socket ... Sep 1 17:16:08 fileserve sm-mta[2102]: NOQUEUE: SYSERR(root): opendaemonsocket: daemon Daemon0: server SMTP socket wedged: exiting (sendmail or any other MTA is not enabled/running) base system: Sep 1 17:16:08 frank-server kernel: epair1b: DAD detected duplicate IPv6 address fe80:2::ff:fe00:70b: NS in/out=0/1, NA in=1 Sep 1 17:16:08 frank-server kernel: epair1b: DAD complete for fe80:2::ff:fe00:70b - duplicate found Sep 1 17:16:08 frank-server kernel: epair1b: manual intervention required Sep 1 17:16:08 frank-server kernel: epair1b: possible hardware address duplication detected, disable IPv6 From dmesg on boot: bridge0: Ethernet address: 3a:fa:3f:1e:0e:2e epair0a: Ethernet address: 02:fa:c2:00:04:0a epair0b: Ethernet address: 02:00:00:00:05:0b epair0a: promiscuous mode enabled nfe0: link state changed to DOWN nfe0: link state changed to UP epair1a: Ethernet address: 02:aa:d1:00:05:0a epair1b: Ethernet address: 02:00:00:00:06:0b epair1a: promiscuous mode enabled epair2a: Ethernet address: 02:9a:d2:00:06:0a epair2b: Ethernet address: 02:00:00:00:07:0b epair2a: promiscuous mode enabled -they seem unique to me. I've also attached my full /etc/rc.conf. I have applied the patch on http://wiki.polymorf.fr/index.php/Howto:FreeBSD_jail_vnet on my /etc/rc.d/jail script so that the parameter -c vnet is passed on, and the jail_jname_earlypoststart* variables are issued on jail start. The jail's networking seems a little unstable. I can usually ssh into it at 10.31.45.12 but at random times the connection just stalls. Then, I can only return to the jail using jexec from the base. Could someone point out what I'm doing wrong? Thanks in advance. Frank --------------060804080900050106070900 Content-Type: text/plain; name="rc.conf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="rc.conf" # This file now contains just the overrides from /etc/defaults/rc.conf. # Please make all changes to this file, not to /etc/defaults/rc.conf. # Enable network daemons for user convenience. # Created: Thu Mar 25 19:27:46 2010 # -- sysinstall generated deltas -- # Thu Mar 25 19:28:36 2010 hostname="frank-server" defaultrouter="10.31.45.1" ifconfig_nfe0="inet 10.31.45.10 netmask 255.255.255.0" syslogd_flags="-ss -c" zfs_enable="YES" sshd_enable="YES" denyhosts_enable="YES" gateway_enable="YES" #openvpn_enable="YES" #openvpn_if="tap" #openvpn_flags="--script-security 3" cloned_interfaces="bridge0" ifconfig_bridge0="addm nfe0" jail_enable="YES" jail_v2_enable="YES" jail_list="www fileserve mysql" jail_www_name="www" jail_www_hostname="www.frank-server" jail_www_devfs_enable="YES" jail_www_devfs_ruleset="devfsrules_jail" jail_www_rootdir="/jails/www" jail_www_mount_enable="YES" jail_www_vnet_enable="YES" jail_www_exec_prestart0="ifconfig epair0 create" jail_www_exec_prestart1="ifconfig bridge0 addm epair0a" jail_www_exec_prestart2="ifconfig epair0a up" jail_www_exec_earlypoststart0="ifconfig epair0b vnet www" jail_www_exec_afterstart0="ifconfig lo0 127.0.0.1/8 up" jail_www_exec_afterstart1="ifconfig epair0b 10.31.45.11/24 up" jail_www_exec_afterstart2="route add default 10.31.45.1" jail_www_exec_afterstart3="/bin/sh /etc/rc" jail_www_exec_poststop0="ifconfig bridge0 deletem epair0a" jail_www_exec_poststop1="ifconfig epair0a destroy" jail_fileserve_name="fileserve" jail_fileserve_hostname="fileserve.frank-server" jail_fileserve_devfs_enable="YES" jail_fileserve_devfs_ruleset="devfsrules_printers" jail_fileserve_rootdir="/jails/fileserve" jail_fileserve_mount_enable="YES" jail_fileserve_vnet_enable="YES" jail_fileserve_exec_prestart0="ifconfig epair1 create" jail_fileserve_exec_prestart1="ifconfig bridge0 addm epair1a" jail_fileserve_exec_prestart2="ifconfig epair1a up" jail_fileserve_exec_earlypoststart0="ifconfig epair1b vnet fileserve" jail_fileserve_exec_afterstart0="ifconfig lo0 127.0.0.1/8 up" jail_fileserve_exec_afterstart1="ifconfig epair1b 10.31.45.12/24 up" jail_fileserve_exec_afterstart2="route add default 10.31.45.1" jail_fileserve_exec_afterstart3="/bin/sh /etc/rc" jail_fileserve_exec_poststop0="ifconfig bridge0 deletem epair1a" jail_fileserve_exec_poststop1="ifconfig epair1a destroy" jail_mysql_name="mysql" jail_mysql_hostname="mysql.frank-server" jail_mysql_devfs_enable="YES" jail_mysql_devfs_ruleset="devfsrules_jail" jail_mysql_rootdir="/jails/mysql" jail_mysql_mount_enable="YES" jail_mysql_vnet_enable="YES" jail_mysql_exec_prestart0="ifconfig epair2 create" jail_mysql_exec_prestart1="ifconfig bridge0 addm epair2a" jail_mysql_exec_prestart2="ifconfig epair2a up" jail_mysql_exec_earlypoststart0="ifconfig epair2b vnet mysql" jail_mysql_exec_afterstart0="ifconfig lo0 127.0.0.1/8 up" jail_mysql_exec_afterstart1="ifconfig epair2b 10.31.45.13/24 up" jail_mysql_exec_afterstart2="route add default 10.31.45.1" jail_mysql_exec_afterstart3="/bin/sh /etc/rc" jail_mysql_exec_poststop0="ifconfig bridge0 deletem epair2a" jail_mysql_exec_poststop1="ifconfig epair2a destroy" --------------060804080900050106070900-- From owner-freebsd-virtualization@FreeBSD.ORG Thu Sep 2 13:27:53 2010 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1693E10656D8 for ; Thu, 2 Sep 2010 13:27:53 +0000 (UTC) (envelope-from frank@zzattack.org) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 7135D8FC1C for ; Thu, 2 Sep 2010 13:27:52 +0000 (UTC) Received: by wyb33 with SMTP id 33so307057wyb.13 for ; Thu, 02 Sep 2010 06:27:51 -0700 (PDT) Received: by 10.227.42.4 with SMTP id q4mr8536048wbe.156.1283434070745; Thu, 02 Sep 2010 06:27:50 -0700 (PDT) Received: from [10.31.45.197] (21-78-ftth.onsneteindhoven.nl [88.159.78.21]) by mx.google.com with ESMTPS id k15sm333246wer.47.2010.09.02.06.27.46 (version=SSLv3 cipher=RC4-MD5); Thu, 02 Sep 2010 06:27:47 -0700 (PDT) Message-ID: <4C7FA623.2010802@zzattack.org> Date: Thu, 02 Sep 2010 15:26:59 +0200 From: Frank Razenberg User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-virtualization@freebsd.org References: <4C7E8E7C.7090708@zzattack.org> <4C7F8551.6020901@zzattack.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: duplicate epair ipv6 addresses X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Sep 2010 13:27:53 -0000 Sorry Yavuz, Here they are: base nfe0: flags=8943 metric 0 mtu 1500 options=80008 ether 00:22:15:bb:6d:6f inet 10.31.45.10 netmask 0xffffff00 broadcast 10.31.45.255 media: Ethernet autoselect (1000baseT ) status: active lo0: flags=8049 metric 0 mtu 16384 options=3 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 inet6 ::1 prefixlen 128 inet 127.0.0.1 netmask 0xff000000 nd6 options=3 bridge0: flags=8843 metric 0 mtu 1500 ether de:3b:7a:d8:3a:98 id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: epair2a flags=143 ifmaxaddr 0 port 6 priority 128 path cost 2000 member: epair1a flags=143 ifmaxaddr 0 port 5 priority 128 path cost 2000 member: epair0a flags=143 ifmaxaddr 0 port 4 priority 128 path cost 2000 member: nfe0 flags=143 ifmaxaddr 0 port 1 priority 128 path cost 55 epair0a: flags=8943 metric 0 mtu 1500 ether 02:9a:c6:00:04:0a epair1a: flags=8943 metric 0 mtu 1500 ether 02:da:d1:00:05:0a epair2a: flags=8943 metric 0 mtu 1500 ether 02:ea:c6:00:06:0a jail1 lo0: flags=8049 metric 0 mtu 16384 options=3 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 nd6 options=3 epair0b: flags=8843 metric 0 mtu 1500 ether 02:00:00:00:05:0b inet6 fe80::ff:fe00:50b%epair0b prefixlen 64 scopeid 0x2 inet 10.31.45.11 netmask 0xffffff00 broadcast 10.31.45.255 nd6 options=3 jail2 lo0: flags=8049 metric 0 mtu 16384 options=3 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 nd6 options=3 epair1b: flags=8843 metric 0 mtu 1500 ether 02:00:00:00:06:0b inet6 fe80::ff:fe00:60b%epair1b prefixlen 64 scopeid 0x2 inet 10.31.45.12 netmask 0xffffff00 broadcast 10.31.45.255 nd6 options=3 jail3 lo0: flags=8049 metric 0 mtu 16384 options=3 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 nd6 options=3 epair2b: flags=8843 metric 0 mtu 1500 ether 02:00:00:00:07:0b inet6 fe80::ff:fe00:70b%epair2b prefixlen 64 scopeid 0x2 inet 10.31.45.13 netmask 0xffffff00 broadcast 10.31.45.255 nd6 options=3 Frank On 9/2/2010 1:10 PM, yavuz gokirmak wrote: > Hi Frank, > > You forgot to paste ifconfigs.. > > > On 2 September 2010 14:06, Frank Razenberg > wrote: > > Hi Yavuz, > > Thanks for your response. I've pasted the ifconfig output from all > jails below. > I've tried restarting all my jails. Stopping all 3 is no problem, > but when I try to bring up the first jail again, I get a kernel > panic. This seems reproducable; it happen 5/5 times I tried. > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > faujlt virtual address = 0x290 > fault code = supervisor data, page not present > > I do believe however this is related to my 'other' issue which I > posted at > http://lists.freebsd.org/pipermail/freebsd-stable/2010-September/058531.html, > for which the solutions seems to be waiting for Bjoern to apply > some patches. > > No matter which jails are active, pinging to ffe80:2::ff:fe00:70b > results in > ping: cannot resolve ffe80:2::ff:fe00:70b: Unknown host > > Frank > > > > On 9/2/2010 8:09 AM, yavuz gokirmak wrote: >> Hi, >> Firstly, it seems that your second jail tries to get >> "fe80:2::ff:fe00:70b" address. But I think that second jail >> should take an address like "fe80:2::ff:fe00:60b" because its mac >> address is "02:00:00:00:06:0b". This is strange, could you send >> ifconfig outputs from jails... >> >> Secondly, if I were you, I would create only first jail and try >> to ping "ffe80:2::ff:fe00:70b". Try to understand who is holding >> this address. >> >> best regards.. >> >> yavuz >> >> >> On 1 September 2010 20:33, Frank Razenberg > > wrote: >> >> Hi, >> >> I'm receiving some messages regarding a possibly duplicate >> IPv6 address when starting a vnet jail. I have 3 jails, and >> the second one get started is generating some errors. >> Starting the third one does not generate any similar error >> messages. I've pasted the relevant log sections below: >> >> fileserve's /var/log/messages >> Sep 1 17:16:08 fileserve sm-mta[2102]: NOQUEUE: >> SYSERR(root): opendaemonsocket: daemon Daemon0: cannot bind: >> Address already in use >> Sep 1 17:16:08 fileserve sm-mta[2102]: daemon Daemon0: >> problem creating SMTP socket >> ... >> Sep 1 17:16:08 fileserve sm-mta[2102]: NOQUEUE: >> SYSERR(root): opendaemonsocket: daemon Daemon0: server SMTP >> socket wedged: exiting >> (sendmail or any other MTA is not enabled/running) >> >> base system: >> Sep 1 17:16:08 frank-server kernel: epair1b: DAD detected >> duplicate IPv6 address fe80:2::ff:fe00:70b: NS in/out=0/1, NA >> in=1 >> Sep 1 17:16:08 frank-server kernel: epair1b: DAD complete >> for fe80:2::ff:fe00:70b - duplicate found >> Sep 1 17:16:08 frank-server kernel: epair1b: manual >> intervention required >> Sep 1 17:16:08 frank-server kernel: epair1b: possible >> hardware address duplication detected, disable IPv6 >> >> >> From dmesg on boot: >> bridge0: Ethernet address: 3a:fa:3f:1e:0e:2e >> epair0a: Ethernet address: 02:fa:c2:00:04:0a >> epair0b: Ethernet address: 02:00:00:00:05:0b >> epair0a: promiscuous mode enabled >> nfe0: link state changed to DOWN >> nfe0: link state changed to UP >> epair1a: Ethernet address: 02:aa:d1:00:05:0a >> epair1b: Ethernet address: 02:00:00:00:06:0b >> epair1a: promiscuous mode enabled >> epair2a: Ethernet address: 02:9a:d2:00:06:0a >> epair2b: Ethernet address: 02:00:00:00:07:0b >> epair2a: promiscuous mode enabled >> >> -they seem unique to me. >> >> I've also attached my full /etc/rc.conf. I have applied the >> patch on >> http://wiki.polymorf.fr/index.php/Howto:FreeBSD_jail_vnet on >> my /etc/rc.d/jail script so that the parameter -c vnet is >> passed on, and the jail_jname_earlypoststart* variables are >> issued on jail start. >> >> The jail's networking seems a little unstable. I can usually >> ssh into it at 10.31.45.12 but at random times the connection >> just stalls. Then, I can only return to the jail using jexec >> from the base. >> Could someone point out what I'm doing wrong? Thanks in advance. >> >> Frank >> >> >> _______________________________________________ >> freebsd-virtualization@freebsd.org >> mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization >> To unsubscribe, send any mail to >> "freebsd-virtualization-unsubscribe@freebsd.org >> " >> >> > > From owner-freebsd-virtualization@FreeBSD.ORG Thu Sep 2 13:55:08 2010 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A67111065696 for ; Thu, 2 Sep 2010 13:55:08 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [IPv6:2001:4068:10::3]) by mx1.freebsd.org (Postfix) with ESMTP id 0491B8FC25 for ; Thu, 2 Sep 2010 13:55:08 +0000 (UTC) Received: from localhost (amavis.fra.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 3A73E41C6FC; Thu, 2 Sep 2010 15:55:06 +0200 (CEST) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([192.168.74.103]) by localhost (amavis.fra.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id xOWo5aE6AG3x; Thu, 2 Sep 2010 15:55:05 +0200 (CEST) Received: by mail.cksoft.de (Postfix, from userid 66) id 974AA41C6F2; Thu, 2 Sep 2010 15:55:05 +0200 (CEST) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 38FA34448F3; Thu, 2 Sep 2010 13:51:35 +0000 (UTC) Date: Thu, 2 Sep 2010 13:51:34 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Frank Razenberg In-Reply-To: <4C7FA623.2010802@zzattack.org> Message-ID: <20100902134953.C31898@maildrop.int.zabbadoz.net> References: <4C7E8E7C.7090708@zzattack.org> <4C7F8551.6020901@zzattack.org> <4C7FA623.2010802@zzattack.org> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: FreeBSD virtualization mailing list Subject: Re: duplicate epair ipv6 addresses X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Sep 2010 13:55:08 -0000 On Thu, 2 Sep 2010, Frank Razenberg wrote: Hey, > base > nfe0: flags=8943 metric 0 mtu > 1500 > options=80008 > ether 00:22:15:bb:6d:6f > inet 10.31.45.10 netmask 0xffffff00 broadcast 10.31.45.255 > media: Ethernet autoselect (1000baseT ) > status: active > lo0: flags=8049 metric 0 mtu 16384 > options=3 > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 > inet6 ::1 prefixlen 128 > inet 127.0.0.1 netmask 0xff000000 > nd6 options=3 > bridge0: flags=8843 metric 0 mtu 1500 > ether de:3b:7a:d8:3a:98 > id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 > maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 > root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 > member: epair2a flags=143 > ifmaxaddr 0 port 6 priority 128 path cost 2000 > member: epair1a flags=143 > ifmaxaddr 0 port 5 priority 128 path cost 2000 > member: epair0a flags=143 > ifmaxaddr 0 port 4 priority 128 path cost 2000 > member: nfe0 flags=143 > ifmaxaddr 0 port 1 priority 128 path cost 55 > epair0a: flags=8943 metric 0 > mtu 1500 > ether 02:9a:c6:00:04:0a > epair1a: flags=8943 metric 0 > mtu 1500 > ether 02:da:d1:00:05:0a > epair2a: flags=8943 metric 0 > mtu 1500 > ether 02:ea:c6:00:06:0a What makes me wonder is why the ether addresses of all three "a" epair ends are non-default? Do you know what changed them? Did you do do avoid collisions with possibly other epairs bridged to a 2nd machine over nfe0? /bz -- Bjoern A. Zeeb Welcome a new stage of life. From owner-freebsd-virtualization@FreeBSD.ORG Thu Sep 2 14:15:45 2010 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DA3C41065698 for ; Thu, 2 Sep 2010 14:15:45 +0000 (UTC) (envelope-from frank@zzattack.org) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 6F04E8FC1B for ; Thu, 2 Sep 2010 14:15:44 +0000 (UTC) Received: by bwz20 with SMTP id 20so724530bwz.13 for ; Thu, 02 Sep 2010 07:15:44 -0700 (PDT) Received: by 10.204.126.82 with SMTP id b18mr6465634bks.124.1283436943992; Thu, 02 Sep 2010 07:15:43 -0700 (PDT) Received: from [10.31.45.197] (21-78-ftth.onsneteindhoven.nl [88.159.78.21]) by mx.google.com with ESMTPS id s34sm463787bkk.1.2010.09.02.07.15.41 (version=SSLv3 cipher=RC4-MD5); Thu, 02 Sep 2010 07:15:42 -0700 (PDT) Message-ID: <4C7FB15D.8040906@zzattack.org> Date: Thu, 02 Sep 2010 16:14:53 +0200 From: Frank Razenberg User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-virtualization@freebsd.org References: <4C7E8E7C.7090708@zzattack.org> <4C7F8551.6020901@zzattack.org> <4C7FA623.2010802@zzattack.org> <20100902134953.C31898@maildrop.int.zabbadoz.net> In-Reply-To: <20100902134953.C31898@maildrop.int.zabbadoz.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: duplicate epair ipv6 addresses X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Sep 2010 14:15:46 -0000 Hi Bjoern, I do have an openvpn setup which also creates a bridge. At one point in time it conflicted with the bridge0 interface used for the jails. The openvpn 'up' script did the following: #!/bin/sh /sbin/ifconfig bridge0 create /sbin/ifconfig bridge0 addm nfe0 addm $dev up /sbin/ifconfig $dev up It may have executed a couple of times while bridge0 already existed and had the epairs as members. I don't recall the epair's 'a'-end having different ethernet addresses before, but I haven't specifically looked at them. I don't believe I do any manual collision detection. I'm not sure whether this answers your questions, if you need any more info please let me know. Frank On 9/2/2010 3:51 PM, Bjoern A. Zeeb wrote: > On Thu, 2 Sep 2010, Frank Razenberg wrote: > > Hey, > >> base >> nfe0: flags=8943 >> metric 0 mtu 1500 >> options=80008 >> ether 00:22:15:bb:6d:6f >> inet 10.31.45.10 netmask 0xffffff00 broadcast 10.31.45.255 >> media: Ethernet autoselect (1000baseT ) >> status: active >> lo0: flags=8049 metric 0 mtu 16384 >> options=3 >> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 >> inet6 ::1 prefixlen 128 >> inet 127.0.0.1 netmask 0xff000000 >> nd6 options=3 >> bridge0: flags=8843 metric 0 >> mtu 1500 >> ether de:3b:7a:d8:3a:98 >> id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 >> maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 >> root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 >> member: epair2a flags=143 >> ifmaxaddr 0 port 6 priority 128 path cost 2000 >> member: epair1a flags=143 >> ifmaxaddr 0 port 5 priority 128 path cost 2000 >> member: epair0a flags=143 >> ifmaxaddr 0 port 4 priority 128 path cost 2000 >> member: nfe0 flags=143 >> ifmaxaddr 0 port 1 priority 128 path cost 55 >> epair0a: flags=8943 >> metric 0 mtu 1500 >> ether 02:9a:c6:00:04:0a >> epair1a: flags=8943 >> metric 0 mtu 1500 >> ether 02:da:d1:00:05:0a >> epair2a: flags=8943 >> metric 0 mtu 1500 >> ether 02:ea:c6:00:06:0a > > What makes me wonder is why the ether addresses of all three "a" > epair ends are non-default? Do you know what changed them? Did you > do do avoid collisions with possibly other epairs bridged to a 2nd > machine over nfe0? > > /bz > From owner-freebsd-virtualization@FreeBSD.ORG Thu Sep 2 14:30:07 2010 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 504881065740 for ; Thu, 2 Sep 2010 14:30:07 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [IPv6:2001:4068:10::3]) by mx1.freebsd.org (Postfix) with ESMTP id DEAAA8FC14 for ; Thu, 2 Sep 2010 14:30:06 +0000 (UTC) Received: from localhost (amavis.fra.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 0582C41C65E; Thu, 2 Sep 2010 16:30:06 +0200 (CEST) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([192.168.74.103]) by localhost (amavis.fra.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id 4wYc6MBzrsoz; Thu, 2 Sep 2010 16:30:05 +0200 (CEST) Received: by mail.cksoft.de (Postfix, from userid 66) id 710A241C64C; Thu, 2 Sep 2010 16:30:05 +0200 (CEST) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id CB83A4448F3; Thu, 2 Sep 2010 14:28:46 +0000 (UTC) Date: Thu, 2 Sep 2010 14:28:46 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Frank Razenberg In-Reply-To: <4C7FB15D.8040906@zzattack.org> Message-ID: <20100902142102.R31898@maildrop.int.zabbadoz.net> References: <4C7E8E7C.7090708@zzattack.org> <4C7F8551.6020901@zzattack.org> <4C7FA623.2010802@zzattack.org> <20100902134953.C31898@maildrop.int.zabbadoz.net> <4C7FB15D.8040906@zzattack.org> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: FreeBSD virtualization mailing list Subject: Re: duplicate epair ipv6 addresses X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Sep 2010 14:30:07 -0000 On Thu, 2 Sep 2010, Frank Razenberg wrote: Hey Frank, > I do have an openvpn setup which also creates a bridge. At one point in time > it conflicted with the bridge0 interface used for the jails. The openvpn 'up' > script did the following: > > #!/bin/sh > /sbin/ifconfig bridge0 create > /sbin/ifconfig bridge0 addm nfe0 addm $dev up > /sbin/ifconfig $dev up > > It may have executed a couple of times while bridge0 already existed and had > the epairs as members. I don't recall the epair's 'a'-end having different > ethernet addresses before, but I haven't specifically looked at them. I don't > believe I do any manual collision detection. Ok, then this is strange than unless if_bridge(4) is doing it. No, doesn't seem so and I wouldn't have expected it either: lion3# ifconfig epair99 create epair99a lion3# ifconfig epair99a epair99a: flags=8842 metric 0 mtu 1500 ether 02:00:00:00:09:0a lion3# ifconfig epair99b epair99b: flags=8842 metric 0 mtu 1500 ether 02:00:00:00:0a:0b lion3# ifconfig bridge0 create lion3# ifconfig bridge0 up lion3# ifconfig bridge0 addm epair99a lion3# ifconfig epair99a epair99a: flags=8942 metric 0 mtu 1500 ether 02:00:00:00:09:0a lion3# ifconfig epair99a up lion3# ifconfig epair99b up lion3# ifconfig epair99a epair99a: flags=8943 metric 0 mtu 1500 ether 02:00:00:00:09:0a lion3# ifconfig bridge0 bridge0: flags=8843 metric 0 mtu 1500 ether be:de:50:ce:29:3b id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: epair99a flags=143 ifmaxaddr 0 port 9 priority 128 path cost 2000 lion3# ifconfig bridge0 addm ix1 lion3# ifconfig epair99a epair99a: flags=8943 metric 0 mtu 1500 ether 02:00:00:00:09:0a lion3# ifconfig bridge0 bridge0: flags=8843 metric 0 mtu 1500 ether be:de:50:ce:29:3b id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: ix1 flags=143 ifmaxaddr 0 port 6 priority 128 path cost 20000 member: epair99a flags=143 ifmaxaddr 0 port 9 priority 128 path cost 2000 As you can see the epair99a interface still has the same ether address 02:00:00::0a as when intiially created. There is either some memory corruption or other magic happening for you. > I'm not sure whether this answers your questions, if you need any more info > please let me know. Are you having multiple machines with epairs bridge to the same LAN? If so you may have collisions of epairb nodes with overlapping ether addresses, which IPv6 ND6 DAD (duplicate address detection) would notice. You would probably find multiple 02:00:00:00:07:0b addresses on different machines. Which also means that you'll have to do manual ether address assignments (see 3rd paragraph of the DESCRIPTION section in the epair(4) manual page. /bz -- Bjoern A. Zeeb Welcome a new stage of life. From owner-freebsd-virtualization@FreeBSD.ORG Thu Sep 2 14:53:26 2010 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5F31D1065696 for ; Thu, 2 Sep 2010 14:53:26 +0000 (UTC) (envelope-from frank@zzattack.org) Received: from mail-ew0-f54.google.com (mail-ew0-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id E905A8FC34 for ; Thu, 2 Sep 2010 14:53:25 +0000 (UTC) Received: by ewy4 with SMTP id 4so345097ewy.13 for ; Thu, 02 Sep 2010 07:53:24 -0700 (PDT) Received: by 10.213.13.142 with SMTP id c14mr81715eba.84.1283439204569; Thu, 02 Sep 2010 07:53:24 -0700 (PDT) Received: from [10.31.45.197] (21-78-ftth.onsneteindhoven.nl [88.159.78.21]) by mx.google.com with ESMTPS id z55sm831630eeh.15.2010.09.02.07.53.21 (version=SSLv3 cipher=RC4-MD5); Thu, 02 Sep 2010 07:53:21 -0700 (PDT) Message-ID: <4C7FBA31.9000205@zzattack.org> Date: Thu, 02 Sep 2010 16:52:33 +0200 From: Frank Razenberg User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-virtualization@freebsd.org References: <4C7E8E7C.7090708@zzattack.org> <4C7F8551.6020901@zzattack.org> <4C7FA623.2010802@zzattack.org> <20100902134953.C31898@maildrop.int.zabbadoz.net> <4C7FB15D.8040906@zzattack.org> <20100902142102.R31898@maildrop.int.zabbadoz.net> In-Reply-To: <20100902142102.R31898@maildrop.int.zabbadoz.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: duplicate epair ipv6 addresses X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Sep 2010 14:53:26 -0000 Hey Bjoern, Thanks for checking. This unfortunately is the only machine on the LAN with epairs, so I guess we run out of possible explanations then :( Just to make sure, I will be running memory tests all night. It's probably a long shot, but could this is related to the if_tap problem I mailed about earlier on freebsd-stable@ list? If so, I'm very interested in testing the result once you did the patching you mentioned in that thread. Is there a way for me to know when you've done so? If you like I would also volunteer to test these patches before they're merged with any kind of source tree. Frank On 9/2/2010 4:28 PM, Bjoern A. Zeeb wrote: > On Thu, 2 Sep 2010, Frank Razenberg wrote: > > Hey Frank, > >> I do have an openvpn setup which also creates a bridge. At one point >> in time it conflicted with the bridge0 interface used for the jails. >> The openvpn 'up' script did the following: >> >> #!/bin/sh >> /sbin/ifconfig bridge0 create >> /sbin/ifconfig bridge0 addm nfe0 addm $dev up >> /sbin/ifconfig $dev up >> >> It may have executed a couple of times while bridge0 already existed >> and had the epairs as members. I don't recall the epair's 'a'-end >> having different ethernet addresses before, but I haven't >> specifically looked at them. I don't believe I do any manual >> collision detection. > > Ok, then this is strange than unless if_bridge(4) is doing it. No, > doesn't seem so and I wouldn't have expected it either: > > lion3# ifconfig epair99 create > epair99a > lion3# ifconfig epair99a > epair99a: flags=8842 metric 0 mtu > 1500 > ether 02:00:00:00:09:0a > lion3# ifconfig epair99b > epair99b: flags=8842 metric 0 mtu > 1500 > ether 02:00:00:00:0a:0b > lion3# ifconfig bridge0 create > lion3# ifconfig bridge0 up > lion3# ifconfig bridge0 addm epair99a > lion3# ifconfig epair99a > epair99a: flags=8942 > metric 0 mtu 1500 > ether 02:00:00:00:09:0a > lion3# ifconfig epair99a up > lion3# ifconfig epair99b up > lion3# ifconfig epair99a > epair99a: flags=8943 > metric 0 mtu 1500 > ether 02:00:00:00:09:0a > lion3# ifconfig bridge0 > bridge0: flags=8843 metric 0 > mtu 1500 > ether be:de:50:ce:29:3b > id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 > maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 > root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 > member: epair99a flags=143 > ifmaxaddr 0 port 9 priority 128 path cost 2000 > lion3# ifconfig bridge0 addm ix1 > lion3# ifconfig epair99a > epair99a: flags=8943 > metric 0 mtu 1500 > ether 02:00:00:00:09:0a > lion3# ifconfig bridge0 > bridge0: flags=8843 metric 0 > mtu 1500 > ether be:de:50:ce:29:3b > id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 > maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200 > root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 > member: ix1 flags=143 > ifmaxaddr 0 port 6 priority 128 path cost 20000 > member: epair99a flags=143 > ifmaxaddr 0 port 9 priority 128 path cost 2000 > > > As you can see the epair99a interface still has the same ether address > 02:00:00::0a as when intiially created. > > There is either some memory corruption or other magic happening for you. > >> I'm not sure whether this answers your questions, if you need any >> more info please let me know. > > Are you having multiple machines with epairs bridge to the same LAN? > If so you may have collisions of epairb nodes with overlapping ether > addresses, which IPv6 ND6 DAD (duplicate address detection) would > notice. You would probably find multiple 02:00:00:00:07:0b addresses > on different machines. Which also means that you'll have to do manual > ether address assignments (see 3rd paragraph of the DESCRIPTION > section in the epair(4) manual page. > > /bz >