From e4ea007334a717a615115a0e8bfded9738e3f025 Mon Sep 17 00:00:00 2001
From: Chris Buechler <cmb@pfsense.org>
Date: Thu, 5 May 2016 02:15:00 -0500
Subject: [PATCH] This was right to begin with. Revert "Allow uppercase letters
 in is_unqualified_hostname as well."

This reverts commit 3d5fb131796ba6d9c5d53efe77080d7ddb334f22.
---
 src/etc/inc/util.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/etc/inc/util.inc b/src/etc/inc/util.inc
index c2ee367547..5de5bd1c14 100644
--- a/src/etc/inc/util.inc
+++ b/src/etc/inc/util.inc
@@ -1009,7 +1009,7 @@ function is_unqualified_hostname($hostname) {
 		return false;
 	}
 
-	if (preg_match('/^(?:[a-zA-Z0-9_]|[a-zA-Z0-9_][a-zA-Z0-9_\-]*[a-zA-Z0-9_])$/i', $hostname)) {
+	if (preg_match('/^(?:[a-z0-9_]|[a-z0-9_][a-z0-9_\-]*[a-z0-9_])$/i', $hostname)) {
 		return true;
 	} else {
 		return false;