Resolving Ip addresses question

In the control panel under all username comments.
The ip addresses show up as mine. to the admins.

My host uses a cluster and a code change is necessary in the class core file for v bulletin to resolve them. The file needs to be changed to this

function fetch_ip()
	{
		return $_SERVER['HTTP_X_CLUSTER_CLIENT_IP']

Can you tell me what file needs to be ammended in the arcade?
Thanks in advance for any assistance.

[MrZeropage]

open /arcade/functions/functions.php and look for

  $addrs[] = $_SERVER['REMOTE_ADDR'];
  $addrs[] = $HTTP_PROXY_USER;
  $addrs[] = $REMOTE_ADDR;
  $return['IP_ADDRESS'] = $this->select_var( $addrs );

If you adapt it there and get it working, this will be used all over the arcade