From 7c587b9f7a4794e279aea9a9fee4e5a6fc4e657d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ermal=20Lu=E7i?= <eri@pfsense.org>
Date: Mon, 7 Dec 2009 14:49:57 +0000
Subject: [PATCH] Try to prevent empty interfaces.

---
 etc/inc/captiveportal.inc | 6 ++++--
 etc/inc/util.inc          | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/etc/inc/captiveportal.inc b/etc/inc/captiveportal.inc
index dbed5977d9..4f990f8b24 100644
--- a/etc/inc/captiveportal.inc
+++ b/etc/inc/captiveportal.inc
@@ -322,8 +322,10 @@ EOD;
 			mwexec("/sbin/kldunload ipfw.ko");
 		$listifs = get_configured_interface_list_by_realif();
 		foreach ($listifs as $listrealif => $listif) {
-			mwexec("/sbin/ifconfig {$listrealif} -ipfwfilter");
-			$carpif = link_ip_to_carp_interface(find_interface_ip($listrealif));
+			if (!empty($listrealif)) {
+				mwexec("/sbin/ifconfig {$listrealif} -ipfwfilter");
+				$carpif = link_ip_to_carp_interface(find_interface_ip($listrealif));
+			}
                         if (!empty($carpif)) {
 				$carpsif = explode(" ", $carpif);
 				foreach ($carpsif as $cpcarp)
diff --git a/etc/inc/util.inc b/etc/inc/util.inc
index 0915f033f9..156e4f4f51 100644
--- a/etc/inc/util.inc
+++ b/etc/inc/util.inc
@@ -1112,4 +1112,4 @@ function is_URL($url) {
 	return false;
 }
 
-?>
\ No newline at end of file
+?>