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    <p>Hello Pavel</p>
    <p>What you mean by another oVirt instance ? In one Datacenter it
      has 2 different clusters (or Datacenter in oVirt way of
      orrganizing things), but in the other Datacenter the oVirt Node is
      standlone.</p>
    <p>Let me know.</p>
    <p>Fernando<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 12/07/2017 16:49, Pavel Gashev
      wrote:<br>
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      cite="mid:E517ED46-B6FF-4F0A-9DD5-D04E4578AA4C@acronis.com">
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        <p class="MsoNormal"><span
            style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">Fernando,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">It
            looks like you have another oVirt instance in the same
            network segment(s). Don’t you?<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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          <p class="MsoNormal"><b><span
                style="font-family:Calibri;color:black">From: </span>
            </b><span style="font-family:Calibri;color:black"><a class="moz-txt-link-rfc2396E" href="mailto:users-bounces@ovirt.org">&lt;users-bounces@ovirt.org&gt;</a>
              on behalf of FERNANDO FREDIANI
              <a class="moz-txt-link-rfc2396E" href="mailto:fernando.frediani@upx.com">&lt;fernando.frediani@upx.com&gt;</a><br>
              <b>Date: </b>Wednesday, 12 July 2017 at 16:21<br>
              <b>To: </b><a class="moz-txt-link-rfc2396E" href="mailto:users@ovirt.org">"users@ovirt.org"</a> <a class="moz-txt-link-rfc2396E" href="mailto:users@ovirt.org">&lt;users@ovirt.org&gt;</a><br>
              <b>Subject: </b>[ovirt-users] Bizzare oVirt network
              problem<o:p></o:p></span></p>
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          <p class="MsoNormal"><o:p> </o:p></p>
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        <p class="MsoNormal"><span style="font-family:Arial">Hello.<br>
            <br>
            I am facing a pretty bizzare problem in two of my Nodes
            running oVirt. A given VM running a few hundred Mbps of
            traffic simply stops passing traffic and only recovers after
            a reboot. Checking the bridge with 'brctl showmacs BRIDGE' I
            see the VM's MAC address missing during this event.<br>
            <br>
            It seems the bridge simply unlearn the VM's mac address
            which only returns when the VM is rebooted.<br>
            This problems happened in two different Nodes running in
            different hardware, in different datacenter, in different
            network architecture, different switch vendors and different
            bonding modes.<br>
            <br>
            The main differences these Nodes have compared to others I
            have and which don't show this problem are:<br>
                - The CentOS 7 installed is a Minimal installation
            instead of oVirt-NG<br>
                - The Kernel used is 4.12 (elrepo) instead of the
            default 3.10<br>
                - The ovirtmgmt network is used also for the Virtual
            Machine showing this problem.<br>
            <br>
            Has anyone have any idea if it may have anything to do with
            oVirt (any filters) or any of the components different from
            a oVirt-NG installation ?<br>
            <br>
            Thanks<br>
            Fernando<br>
            <br>
          </span><o:p></o:p></p>
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