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    <p><font face="Helvetica, Arial, sans-serif">Hi,</font></p>
    <p>If its a web server I would suggest using url check instead of
      port check like below:</p>
    <p><a class="moz-txt-link-abbreviated" href="http://www.domain.com">www.domain.com</a>    60    IN    LUA    A
      "ifurlup('<a class="moz-txt-link-freetext" href="https://www.domain.com">https://www.domain.com</a>',
      {{'192.168.1.10'},{'192.168.2.20'}}, {timeout=5})"<br>
      <br>
    </p>
    <div class="moz-cite-prefix">Regards<br>
      <b>Jahanzeb Arshad</b><br>
      <br>
    </div>
    <div class="moz-cite-prefix">On 20/9/22 17:25, Adrian M via
      Pdns-users wrote:<br>
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    <blockquote type="cite"
cite="mid:CALNsb6s0_0trSQZnc7KKhY2LZjWvqFCo9k+rYbd5iqiK6rcevA@mail.gmail.com">
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      <div dir="ltr">Hi,<br>
        I'm attempting to implement a simple fail-over mechanism between
        two web servers but I'm not able to find the right syntax.<br>
        <br>
        www  LUA     A          (";if ifportup(443, {'192.168.0.10'})
        then "<br>
                                           "      return '192.168.0.10'
                     "<br>
                                           "else                        
                    "<br>
                                           "      return '10.0.0.10'    
                    "<br>
                                           "end                        
                     ")<br>
        <div><br>
        </div>
        <div>Any suggestions are welcome !</div>
      </div>
      <br>
      <fieldset class="moz-mime-attachment-header"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
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