From c25e42c8e970593ecbd5ef0b2a81379de66113d7 Mon Sep 17 00:00:00 2001
From: Mark Furneaux <mark@furneaux.ca>
Date: Sun, 21 Feb 2016 00:08:22 -0500
Subject: [PATCH] Fix regression on general setup page preventing save with
 blank DNS servers

Introduced in f700dc9
---
 src/usr/local/www/system.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/usr/local/www/system.php b/src/usr/local/www/system.php
index 8c00c11132..a3ad0a5d86 100644
--- a/src/usr/local/www/system.php
+++ b/src/usr/local/www/system.php
@@ -201,7 +201,7 @@ if ($_POST) {
 		}
 	}
 
-	if (count($dnslist) != count(array_unique($dnslist))) {
+	if (count(array_filter($dnslist)) != count(array_unique(array_filter($dnslist)))) {
 		$input_errors[] = gettext('Each configured DNS server must have a unique IP address. Remove the duplicated IP.');
 	}