Date: Wed, 01 Sep 2010 19:33:48 +0200 From: Frank Razenberg <frank@zzattack.org> To: freebsd-virtualization@freebsd.org Subject: duplicate epair ipv6 addresses Message-ID: <4C7E8E7C.7090708@zzattack.org>
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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--
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