Re: [ovirt-users] Network interface not working

Thursday, 8 June 2017

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Hi Lev.

I am create new virtual host, and run ping from internet.

Ping results 70% packet loss.

But, if i am running ping from virtual host to somebody host in the 
internet and at the same time, i am pinging this virtual host from internet.

then ping results 0% packet loss or 10% packet loss.

28.05.2017 13:34, Lev Veyde пишет:
...
 Hi Alex,

 That is quite strange...

 Does this happen on both hosts - have you tried to migrate the VM to 
 the second host and see if the issue still remains?

 Thanks in advance,

 On Fri, May 26, 2017 at 3:02 PM, Герасимов Александр 
 <gerasimov.ay(a)eksmo.ru <mailto:gerasimov.ay@eksmo.ru>> wrote:

     Hi Lev.

     On one of the VMs you only see 1 NIC instead of the 2?

     NO. both VM's sees two NIC, but on first VM ping with no error,
     and second VM ping with 75% error.

     OS version on hosts [root@node01 ~]# cat /etc/redhat-release
     CentOS Linux release 7.3.1611 (Core)

     OS veriosion on VM's [root@node03 ~]# cat /etc/redhat-release
     CentOS Linux release 7.3.1611 (Core)

     *first VM*

     00:03.0 Ethernet controller: Red Hat, Inc Virtio network device

     00:09.0 Ethernet controller: Red Hat, Inc Virtio network device

     [root@node03 ~]# ip l
     1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state
     UNKNOWN mode DEFAULT qlen 1
         link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
     2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
     pfifo_fast state UP mode DEFAULT qlen 1000
         link/ether 00:1a:4a:16:01:51 brd ff:ff:ff:ff:ff:ff
     3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
     pfifo_fast state UP mode DEFAULT qlen 1000
         link/ether 00:1a:4a:16:01:55 brd ff:ff:ff:ff:ff:ff

     *second VM*

     00:03.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
     RTL-8100/8101L/8139 PCI Fast Ethernet Adapter (rev 20)  - but i
     tested all version of NIC and no effect

     00:0a.0 Ethernet controller: Red Hat, Inc Virtio network device

     [root@node04 ~]# ip link
     1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state
     UNKNOWN mode DEFAULT qlen 1
         link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
     2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
     pfifo_fast state UP mode DEFAULT qlen 1000
         link/ether 00:1a:4a:16:01:53 brd ff:ff:ff:ff:ff:ff
     3: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
     pfifo_fast state UP mode DEFAULT qlen 1000
         link/ether 00:1a:4a:16:01:52 brd ff:ff:ff:ff:ff:ff

     In logs no messages only like this :

     May 26 15:01:01 node04 systemd: Started Session 67263 of user root.
     May 26 15:01:01 node04 systemd: Starting Session 67263 of user root.
     May 26 15:01:01 node04 systemd: Created slice user-600.slice.
     May 26 15:01:01 node04 systemd: Starting user-600.slice.
     May 26 15:01:01 node04 systemd: Started Session 67262 of user bitrix.
     May 26 15:01:01 node04 systemd: Starting Session 67262 of user bitrix.
     May 26 15:01:01 node04 systemd: Removed slice user-600.slice.
     May 26 15:01:01 node04 systemd: Stopping user-600.slice.

     Hi Alexander,

     So if I understand it correctly, you have the following configuration:
     - 2 hosts, each having 2 NICs
     - 2 virtual machines, each have a connection to each one of the NICs
     available on the hosts

     On one of the VMs you only see 1 NIC instead of the 2?

     Are you sure that the VM is properly configured to have 2 NICs?

     What Linux distro and version you're using on the hosts and inside
     the VMs ?

     Can you please send us:
     - the logs from the VM, e.g. /var/log/messages
     - the output of lspci -v
     - the output of ip link

     Thanks in advance,

     2017-05-18 12:19 GMT+03:00 Герасимов Александр <gerasimov.ay at
     eksmo.ru <http://eksmo.ru>>;:

     > Hi all.
     >
     > I have to servers with ovirt.
     >
     > And to identical virtual machines.
     >
     > Both servers are identical. But on second virtual server not
     working one
     > network interface. Ping have a problem. I tried to change
     network driver,
     > but has no effect.
     >
     > I don't understand that to do
     >
     >
     > ovirt version and package:
     >
     > rpm -qa|grep ovirt
     >
     ovirt-imageio-proxy-0.4.0-0.201608310602.gita9b573b.el7.centos.noarch
     > ovirt-engine-vmconsole-proxy-helper-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-restapi-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-extensions-api-impl-4.0.5.5-1.el7.centos.noarch
     > ovirt-imageio-daemon-0.4.0-1.el7.noarch
     > ovirt-engine-wildfly-10.1.0-1.el7.x86_64
     > ovirt-vmconsole-1.0.4-1.el7.centos.noarch
     > ovirt-engine-cli-3.6.9.2-1.el7.noarch
     > ovirt-engine-websocket-proxy-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-dashboard-1.0.5-1.el7.centos.noarch
     > ovirt-host-deploy-1.5.3-1.el7.centos.noarch
     > ovirt-engine-wildfly-overlay-10.0.0-1.el7.noarch
     > ovirt-engine-setup-base-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-dwh-setup-4.0.5-1.el7.centos.noarch
     >
     ovirt-engine-setup-plugin-websocket-proxy-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-setup-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-dbscripts-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-userportal-4.0.5.5-1.el7.centos.noarch
     > ovirt-imageio-common-0.4.0-1.el7.noarch
     > python-ovirt-engine-sdk4-4.0.2-1.el7.centos.x86_64
     > ovirt-vmconsole-host-1.0.4-1.el7.centos.noarch
     > ovirt-engine-dwh-4.0.5-1.el7.centos.noarch
     > ovirt-engine-tools-backup-4.0.5.5-1.el7.centos.noarch
     > ovirt-image-uploader-4.0.1-1.el7.centos.noarch
     > ovirt-engine-setup-plugin-ovirt-engine-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-tools-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-4.0.5.5-1.el7.centos.noarch
     > ovirt-release40-4.0.5-2.noarch
     > ovirt-host-deploy-java-1.5.3-1.el7.centos.noarch
     >
     ovirt-engine-setup-plugin-ovirt-engine-common-4.0.5.5-1.el7.centos.noarch
     > ovirt-iso-uploader-4.0.2-1.el7.centos.noarch
     > ovirt-engine-webadmin-portal-4.0.5.5-1.el7.centos.noarch
     > ovirt-setup-lib-1.0.2-1.el7.centos.noarch
     > ovirt-engine-sdk-python-3.6.9.1-1.el7.centos.noarch
     > ovirt-engine-lib-4.0.5.5-1.el7.centos.noarch
     > ovirt-imageio-proxy-setup-0.4.0-0.201608310602.gita9b573b.
     > el7.centos.noarch
     > ovirt-engine-setup-plugin-vmconsole-proxy-helper-4.0.5.
     > 5-1.el7.centos.noarch
     > ovirt-engine-backend-4.0.5.5-1.el7.centos.noarch
     > ovirt-engine-extension-aaa-jdbc-1.1.1-1.el7.noarch
     > ovirt-vmconsole-proxy-1.0.4-1.el7.centos.noarch
     >
     >

     -- 
     С уважением, базисный админстратор
     Гераcимов Александр
     тел.+7(495)4116886 <tel:+7%20495%20411-68-86>  доб. 5367

     _______________________________________________
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     Users(a)ovirt.org <mailto:Users@ovirt.org>
     http://lists.ovirt.org/mailman/listinfo/users
     <http://lists.ovirt.org/mailman/listinfo/users>

 -- 

 Lev Veyde

 Software Engineer, RHCE | RHCVA | MCITP

 Red Hat Israel

 <https://www.redhat.com>

 lev(a)redhat.com <mailto:lev@redhat.com> | lveyde(a)redhat.com 
 <mailto:lveyde@redhat.com>

 <https://red.ht/sig>
 TRIED. TESTED. TRUSTED. <https://redhat.com/trusted> 
-- 
С уважением, базисный админстратор
Гераcимов Александр
тел. +7(495)4116886 доб. 5367

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    Hi Lev.<br>
    <br>
    I am create new virtual host, and run ping from internet.<br>
    <br>
    Ping results 70% packet loss.<br>
    <br>
    But, if i am running ping from virtual host to somebody host in the
    internet and at the same time, i am pinging this virtual host from
    internet.<br>
    <br>
    then ping results 0% packet loss or 10% packet loss. <br>
    <br>
    <br>
    <div class="moz-cite-prefix">28.05.2017 13:34, Lev Veyde
пишет:<br>
    </div>
    <blockquote type="cite"
cite="mid:CANB6pM5zZaEKG61JRsxc0VMfcqgHQKBS58WA5VpkqKG+u5RyuA@mail.gmail.com">
      <div dir="ltr">
        <div>
          <div>Hi Alex,<br>
            <br>
          </div>
          <div>That is quite strange...<br>
          </div>
          <div><br>
          </div>
          Does this happen on both hosts - have you tried to migrate the
          VM to the second host and see if the issue still remains?<br>
        </div>
        <br>
        <div>
          <div>Thanks in advance,<br>
          </div>
          <div><br>
          </div>
          <div>
            <div class="gmail_extra"><br>
              <div class="gmail_quote">On Fri, May 26, 2017 at 3:02 PM,
                Герасимов Александр <span dir="ltr">&lt;<a
                    href="mailto:gerasimov.ay@eksmo.ru"
target="_blank"

moz-do-not-send=&quot;true&quot;&gt;gerasimov.ay(a)eksmo.ru&lt;/a&gt;&amp;gt;&lt;/span&gt;
                wrote:<br>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  <div text="#000000" bgcolor="#FFFFFF">
                    <p><font face="Times New Roman">Hi
Lev.</font></p>
                    <span class="">
                      <p><br>
                        <font face="Times New Roman">On one of the VMs
                          you only see 1 NIC instead of the 2?</font></p>
                    </span>
                    <p><font face="Times New Roman">NO. both
VM's sees
                        two NIC, but on first VM ping with no error, and
                        second VM ping with 75% error.<br>
                      </font></p>
                    <p><font face="Times New Roman">OS version on
hosts
                        [root@node01 ~]# cat /etc/redhat-release <br>
                        CentOS Linux release 7.3.1611 (Core)</font></p>
                    <p><font face="Times New Roman">OS veriosion on
VM's
                        [root@node03 ~]# cat /etc/redhat-release <br>
                        CentOS Linux release 7.3.1611 (Core)<br>
                      </font></p>
                    <p><font face="Times New Roman"><br>
                      </font></p>
                    <p><font face="Times New Roman"><br>
                      </font></p>
                    <p><b><font face="Times New Roman">first
VM</font></b></p>
                    <p><font face="Times New Roman">00:03.0
Ethernet
                        controller: Red Hat, Inc Virtio network device<br>
                      </font></p>
                    <p><font face="Times New Roman">00:09.0
Ethernet
                        controller: Red Hat, Inc Virtio network
device</font></p>
                    <p><font face="Times New Roman">[root@node03 ~]#
ip
                        l<br>
                        1: lo: &lt;LOOPBACK,UP,LOWER_UP&gt; mtu 65536
                        qdisc noqueue state UNKNOWN mode DEFAULT qlen 1<br>
                            link/loopback 00:00:00:00:00:00 brd
                        00:00:00:00:00:00<br>
                        2: eth0:
&lt;BROADCAST,MULTICAST,UP,LOWER_<wbr>UP&gt;
                        mtu 1500 qdisc pfifo_fast state UP mode DEFAULT
                        qlen 1000<br>
                            link/ether 00:1a:4a:16:01:51 brd
                        ff:ff:ff:ff:ff:ff<br>
                        3: eth1:
&lt;BROADCAST,MULTICAST,UP,LOWER_<wbr>UP&gt;
                        mtu 1500 qdisc pfifo_fast state UP mode DEFAULT
                        qlen 1000<br>
                            link/ether 00:1a:4a:16:01:55 brd
                        ff:ff:ff:ff:ff:ff<br>
                      </font></p>
                    <p><b><font face="Times New Roman">second
VM</font></b></p>
                    <p><font face="Times New Roman">00:03.0
Ethernet
                        controller: Realtek Semiconductor Co., Ltd.
                        RTL-8100/8101L/8139 PCI Fast Ethernet Adapter
                        (rev 20)  - but i tested all version of NIC and
                        no effect<br>
                      </font></p>
                    <p><font face="Times New Roman">00:0a.0
Ethernet
                        controller: Red Hat, Inc Virtio network device<br>
                      </font></p>
                    <p><font face="Times New Roman">[root@node04 ~]#
ip
                        link<br>
                        1: lo: &lt;LOOPBACK,UP,LOWER_UP&gt; mtu 65536
                        qdisc noqueue state UNKNOWN mode DEFAULT qlen 1<br>
                            link/loopback 00:00:00:00:00:00 brd
                        00:00:00:00:00:00<br>
                        2: eth0:
&lt;BROADCAST,MULTICAST,UP,LOWER_<wbr>UP&gt;
                        mtu 1500 qdisc pfifo_fast state UP mode DEFAULT
                        qlen 1000<br>
                            link/ether 00:1a:4a:16:01:53 brd
                        ff:ff:ff:ff:ff:ff<br>
                        3: ens3:
&lt;BROADCAST,MULTICAST,UP,LOWER_<wbr>UP&gt;
                        mtu 1500 qdisc pfifo_fast state UP mode DEFAULT
                        qlen 1000<br>
                            link/ether 00:1a:4a:16:01:52 brd
                        ff:ff:ff:ff:ff:ff<br>
                      </font></p>
                    <p><font face="Times New Roman">In logs no
messages
                        only like this :</font></p>
                    <p><font face="Times New Roman">May 26 15:01:01
                        node04 systemd: Started Session 67263 of user
                        root.<br>
                        May 26 15:01:01 node04 systemd: Starting Session
                        67263 of user root.<br>
                        May 26 15:01:01 node04 systemd: Created slice
                        user-600.slice.<br>
                        May 26 15:01:01 node04 systemd: Starting
                        user-600.slice.<br>
                        May 26 15:01:01 node04 systemd: Started Session
                        67262 of user bitrix.<br>
                        May 26 15:01:01 node04 systemd: Starting Session
                        67262 of user bitrix.<br>
                        May 26 15:01:01 node04 systemd: Removed slice
                        user-600.slice.<br>
                        May 26 15:01:01 node04 systemd: Stopping
                        user-600.slice.<br>
                      </font></p>
                    <p><font face="Times New Roman"><br>
                      </font></p>
                    <p><font face="Times New Roman"><span
class="">Hi
                          Alexander,<br>
                          <br>
                          So if I understand it correctly, you have the
                          following configuration:<br>
                          - 2 hosts, each having 2 NICs<br>
                          - 2 virtual machines, each have a connection
                          to each one of the NICs<br>
                          available on the hosts<br>
                          <br>
                          On one of the VMs you only see 1 NIC instead
                          of the 2?<br>
                          <br>
                          Are you sure that the VM is properly
                          configured to have 2 NICs?<br>
                          <br>
                          What Linux distro and version you're using on
                          the hosts and inside the VMs ?<br>
                          <br>
                          Can you please send us:<br>
                          - the logs from the VM, e.g. /var/log/messages<br>
                          - the output of lspci -v<br>
                          - the output of ip link<br>
                          <br>
                          Thanks in advance,<br>
                          <br>
                        </span></font></p>
                    <div>
                      <div class="h5"><font face="Times New
Roman">
                          2017-05-18 12:19 GMT+03:00 Герасимов Александр
                          &lt;gerasimov.ay at <a href="http://eksmo.ru"
                            target="_blank"
moz-do-not-send="true">eksmo.ru</a>&gt;:<br>
                          <br>
                          &gt; Hi all.<br>
                          &gt;<br>
                          &gt; I have to servers with ovirt.<br>
                          &gt;<br>
                          &gt; And to identical virtual machines.<br>
                          &gt;<br>
                          &gt; Both servers are identical. But on second
                          virtual server not working one<br>
                          &gt; network interface. Ping have a problem. I
                          tried to change network driver,<br>
                          &gt; but has no effect.<br>
                          &gt;<br>
                          &gt; I don't understand that to do<br>
                          &gt;<br>
                          &gt;<br>
                          &gt; ovirt version and package:<br>
                          &gt;<br>
                          &gt; rpm -qa|grep ovirt<br>
                          &gt;
ovirt-imageio-proxy-0.4.0-0.<wbr>201608310602.gita9b573b.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-vmconsole-proxy-<wbr>helper-4.0.5.5-1.el7.centos.<wbr>noarch<br>
                          &gt;
ovirt-engine-restapi-4.0.5.5-<wbr>1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-extensions-api-<wbr>impl-4.0.5.5-1.el7.centos.<wbr>noarch<br>
                          &gt;
ovirt-imageio-daemon-0.4.0-1.<wbr>el7.noarch<br>
                          &gt;
ovirt-engine-wildfly-10.1.0-1.<wbr>el7.x86_64<br>
                          &gt;
ovirt-vmconsole-1.0.4-1.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-cli-3.6.9.2-1.<wbr>el7.noarch<br>
                          &gt;
ovirt-engine-websocket-proxy-<wbr>4.0.5.5-1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-dashboard-1.0.5-<wbr>1.el7.centos.noarch<br>
                          &gt;
ovirt-host-deploy-1.5.3-1.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-wildfly-overlay-<wbr>10.0.0-1.el7.noarch<br>
                          &gt;
ovirt-engine-setup-base-4.0.5.<wbr>5-1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-dwh-setup-4.0.5-<wbr>1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-setup-plugin-<wbr>websocket-proxy-4.0.5.5-1.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-setup-4.0.5.5-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-engine-dbscripts-4.0.5.<wbr>5-1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-userportal-4.0.5.<wbr>5-1.el7.centos.noarch<br>
                          &gt;
ovirt-imageio-common-0.4.0-1.<wbr>el7.noarch<br>
                          &gt;
python-ovirt-engine-sdk4-4.0.<wbr>2-1.el7.centos.x86_64<br>
                          &gt;
ovirt-vmconsole-host-1.0.4-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-engine-dwh-4.0.5-1.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-tools-backup-4.0.<wbr>5.5-1.el7.centos.noarch<br>
                          &gt;
ovirt-image-uploader-4.0.1-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-engine-setup-plugin-<wbr>ovirt-engine-4.0.5.5-1.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-tools-4.0.5.5-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-engine-4.0.5.5-1.el7.<wbr>centos.noarch<br>
                          &gt; ovirt-release40-4.0.5-2.noarch<br>
                          &gt;
ovirt-host-deploy-java-1.5.3-<wbr>1.el7.centos.noarch<br>
                          &gt;

ovirt-engine-setup-plugin-<wbr>ovirt-engine-common-4.0.5.5-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-iso-uploader-4.0.2-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-engine-webadmin-portal-<wbr>4.0.5.5-1.el7.centos.noarch<br>
                          &gt;
ovirt-setup-lib-1.0.2-1.el7.<wbr>centos.noarch<br>
                          &gt;
ovirt-engine-sdk-python-3.6.9.<wbr>1-1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-lib-4.0.5.5-1.<wbr>el7.centos.noarch<br>
                          &gt;
ovirt-imageio-proxy-setup-0.4.<wbr>0-0.201608310602.gita9b573b.<br>
                          &gt; el7.centos.noarch<br>
                          &gt;
ovirt-engine-setup-plugin-<wbr>vmconsole-proxy-helper-4.0.5.<br>
                          &gt; 5-1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-backend-4.0.5.5-<wbr>1.el7.centos.noarch<br>
                          &gt;
ovirt-engine-extension-aaa-<wbr>jdbc-1.1.1-1.el7.noarch<br>
                          &gt;
ovirt-vmconsole-proxy-1.0.4-1.<wbr>el7.centos.noarch<br>
                          &gt;<br>
                          &gt;</font></div>
                    </div>
                    <br>
                    <div>
                      <div class="h5">
                        <pre class="m_-955767302654833500moz-signature"
cols="72">-- 
С уважением, базисный админстратор
Гераcимов Александр
тел. <a href="tel:+7%20495%20411-68-86" value="+74954116886"
target="_blank" moz-do-not-send="true">+7(495)4116886</a>
доб. 5367</pre>
                      </div>
                    </div>
                  </div>
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                                  <p
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                                    <span>Veyde</span></p>
                                  <p

style="font-weight:normal;font-size:10px;margin:0px
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4px;text-transform:uppercase"><span>Software
                                      Engineer</span><span
                                      style="color:rgb(204,204,204)">,
<span
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MCITP</span></span></p>
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style="color:#0088ce;font-size:10px;margin:0;text-decoration:none;font-family:'overpass',sans-serif"
                                        href="mailto:lev@redhat.com"
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moz-do-not-send=&quot;true&quot;&gt;lev(a)redhat.com&lt;/a&gt;
                                      | </span><span><span
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style="color:#0088ce;font-size:10px;margin:0;text-decoration:none;font-family:'overpass',sans-serif"
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                                      TESTED. TRUSTED.</a></div>
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    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
С уважением, базисный админстратор
Гераcимов Александр
тел. +7(495)4116886 доб. 5367</pre>
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