title: The iPhone automatically converts ipv4 to ipv6
body: <p>The iPhone that uses 5g receives ipv6 in a cellular Network.</p>
  <p>In this situation, when I ping</p>
  <p><code>Ping 222.222.222.222</code></p>
  <p>iPhone convert it Automatically</p>
  <p><code>Ping 64:ff9b::dede:dede</code> (ipv6)</p>
  <p>it looks like normal but</p>
  <p>When a split tunnel is applied by configuring a VPN network, the network does not function properly because the network has been converted.</p>
  <p>For example</p>
  <p>I configured VPN Network like this:
  <code>IP : 172.201.10.0 / Sub : 255.255.255.0 / GW : 172.201.10.1</code></p>
  <p>ping 172.201.10.1 must pass through the tunnel network.
  However, ip does not pass through the tunnel because it has been converted to ipv6 (Like 64:ff9b::acc9:a01)</p>
  <p>I don't know where to start.
  Please advise how to solve this problem.</p>