Check if interface exists before issuing a command when disabling captiveportal.

1 files changed, 8 insertions, 6 deletions

diff --git a/etc/inc/captiveportal.inc b/etc/inc/captiveportal.inc
index 1a429dc..31cc680 100644
--- a/etc/inc/captiveportal.inc
+++ b/etc/inc/captiveportal.inc
@@ -329,12 +329,14 @@ EOD;
 		$listifs = get_configured_interface_list_by_realif();
 		foreach ($listifs as $listrealif => $listif) {
 			if (!empty($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 $cpcarp)
-						mwexec("/sbin/ifconfig {$cpcarp} -ipfwfilter");
+				if (does_interface_exist($listrealif)) {
+					mwexec("/sbin/ifconfig {$listrealif} -ipfwfilter");
+					$carpif = link_ip_to_carp_interface(find_interface_ip($listrealif));
+                        		if (!empty($carpif)) {
+						$carpsif = explode(" ", $carpif);
+						foreach ($carpsif as $cpcarp)
+							mwexec("/sbin/ifconfig {$cpcarp} -ipfwfilter");
+					}
 				}
 			}
 		}