From 64aaddf70f2076cfb005f4e2aa1881957c52f704 Mon Sep 17 00:00:00 2001
From: Jeb Campbell <jeb-c4@pfsense.org>
Date: Thu, 7 Jul 2005 15:38:30 +0000
Subject: [PATCH] Sanity checks (ie. is_ipaddr() ) when generating resolv.conf.
 Specifically this fixes importing nameserver.conf from the dhclient-script.

---
 etc/inc/system.inc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/etc/inc/system.inc b/etc/inc/system.inc
index 60082e4a69..f4b7c9fbba 100644
--- a/etc/inc/system.inc
+++ b/etc/inc/system.inc
@@ -53,7 +53,9 @@ function system_resolvconf_generate($dynupdate = false) {
 		if ($nfd) {
 			while (!feof($nfd)) {
 				$dnss = trim(fgets($nfd));
-				if ($dnss) {
+				if  ( preg_match('/^(nameserver )(.*)/',$dnss, $catch) ) 
+					$dnss = $catch[2];
+				if (is_ipaddr($dnss)) {
 					$resolvconf .= "nameserver $dnss\n";
 					$havedns = true;
 				}