title: How to point single subdomain to same server with two IP address
body: <p>For example, I've a <strong>server</strong> hosted at my home with <strong>2 NIC</strong>s for redundancy obviously.  </p>
  
  <ul>
  <li><strong>NIC1</strong> has been assigned with the public IP <code>103.204.82.22</code> from <strong>ISP1</strong> </li>
  <li><strong>NIC2</strong> has been assigned with the public IP <code>144.110.12.64</code> from <strong>ISP2</strong></li>
  </ul>
  
  <p>I can access the server with both IP as usual.</p>
  
  <p>Now, I have a <em>domain</em> <strong><code>acme.com</code></strong>. I've created a <em>subdomain</em> <strong><code>server.acme.com</code></strong>. I want to point <strong><code>server.acme.com</code></strong> to both the IPs so that in case one ISP fails to provide connectivity my server still remains online with the other one. </p>
  
  <p>I've already tried with <strong>A</strong> and <strong>CNAME</strong> records. But it isn't working. It's working with A record if I use only one IP for the subdomain.</p>
  
  <p>Can anyone tell me what and how can I point both the IPs to the single subdomain?</p>
  
  <p>Thanks in advance</p>