[hsoen]

If you are installing 4.2.0.0 version, you need to add below step 1 (from 4.1.0.8) in addition to step 2 (from 4.2.0.0).

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Step 1 (THIS STEP IS NOT REQUIRED IN vBulletin 4.1.7 - IT *IS* REQUIRED IN ALL OTHER VERSIONS, INCLUDING 4.1.8 ONWARDS).

In class_core.php ;

Find ;

// fetch client IP address
$registry->ipaddress = $this->fetch_ip();
define('IPADDRESS', $registry->ipaddress);

// attempt to fetch IP address from behind proxies - useful, but don't rely on it...
$registry->alt_ip = $this->fetch_alt_ip();
define('ALT_IP', $registry->alt_ip);

Replace with ;

// Paul M - Get ip addresses.
$registry->ipaddress = $this->fetch_ip();
$registry->alt_ip = $this->fetch_alt_ip();

// Check that alt_ip is valid address, reset to original if not.
if (preg_match("#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#" , $registry->alt_ip, $iplist))
{
$registry->alt_ip = $iplist[0];
}
else
{
$registry->alt_ip = $registry->ipaddress;
}

// Set ip constants.
if ($registry->ipaddress == $registry->alt_ip)
{
define('PROXYIP','');
define('ALT_IP',$registry->alt_ip);
define('IPADDRESS',$registry->ipaddress);
}
else
{
define('ALT_IP',$registry->alt_ip);
define('IPADDRESS',$registry->alt_ip);
define('PROXYIP',$registry->ipaddress);
$registry->ipaddress = $registry->alt_ip;
}

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Step 2.

In class_core.php ;

Find ;

if ($proxy)
{
define('ALT_IP', $this->ipaddress);
define('IPADDRESS', $this->alt_ip);
}

Insert above it ;

// Detect ALL.
if ($registry->ipaddress == $registry->alt_ip)
{
define('PROXYIP','');
}
else
{
$proxy = true;
define('PROXYIP',$registry->ipaddress);
}

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