From ae20f0776b75f84ce1e2716683f8d2a9119af069 Mon Sep 17 00:00:00 2001
From: Ron Rennick <wpmuguru@git.wordpress.org>
Date: Fri, 28 May 2010 16:40:55 +0000
Subject: [PATCH] will the real host please step forward, fixes #13594

git-svn-id: https://develop.svn.wordpress.org/trunk@15037 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/network.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wp-admin/network.php b/wp-admin/network.php
index aed7b2a40d..4c9b03b289 100644
--- a/wp-admin/network.php
+++ b/wp-admin/network.php
@@ -43,7 +43,7 @@ function network_domain_check() {
  * @return bool Whether subdomain install is allowed
  */
 function allow_subdomain_install() {
-	$domain = preg_replace( '|https?://[^/]|', '', get_option( 'siteurl' ) );
+	$domain = preg_replace( '|https?://([^/]+)|', '$1', get_option( 'siteurl' ) );
 	if( false !== strpos( $domain, '/' ) || 'localhost' == $domain || preg_match( '|[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|', $domain ) )
 		return false;