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    client-id is the DHCPv4 option codd #61, RFC 2132  (see section
    9.14)<br>
    <br>
    duid is the DHCPv6 option, option code #1, RFC 3315 as cited earlier<br>
    <br>
    <div class="moz-cite-prefix">On 04/02/2018 07:07 AM, Rui Pedro
      Caldeira wrote:<br>
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        <div>Hello Thomas and thank you for the fast reply. But I have a
          doubt if duid is based on client identifier, the client-id
          option is based on what? (attach image for context)<br>
          <br>
          Thank you again and best regards,</div>
        <div>Rui</div>
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style="margin:0;font-size:18px;font-weight:bold;color:#333333;font-family:proxima-nova-1,Proxima-Nova,Helvetica,Arial,Sans-Serif">Rui
                                          Pedro Caldeira</div>
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          <div class="gmail_quote">On Mon, Apr 2, 2018 at 11:39 AM,
            Thomas Markwalder <span dir="ltr">
              <<a href="mailto:tmark@isc.org" target="_blank"
                moz-do-not-send="true">tmark@isc.org</a>></span>
            wrote:<br>
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              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div text="#000000" bgcolor="#FFFFFF"><tt>Hello:<br>
                  <br>
                  <br>
                  The DUID comes from the Client Identifier option, 
                  option #1:<br>
                  <br>
                  <a class="m_4711424861060220635moz-txt-link-freetext"
href="https://tools.ietf.org/html/rfc3315#section-22.2" target="_blank"
                    moz-do-not-send="true">https://tools.ietf.org/html/<wbr>rfc3315#section-22.2</a><br>
                  <br>
                  Regards,<br>
                  <br>
                  Thomas Markwalder<br>
                  ISC Software Engineering<br>
                </tt>
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                  <div class="h5"><br>
                    <div class="m_4711424861060220635moz-cite-prefix">On
                      04/02/2018 04:15 AM, Rui Pedro Caldeira wrote:<br>
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                      <div dir="ltr">Good morning, I noticed that Kea is
                        able to make host reservations based on DUID?
                        I'm wondering if this DUID is based on option
                        97? If not what it is based on?
                        <div><br>
                        </div>
                        <div>Thank you in advance and best regards,</div>
                        <div>Rui</div>
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                  <pre>______________________________<wbr>_________________
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</pre>
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