From 51a7c6fdeb4c46ca42d79ceb9b0e65ad0f5f5102 Mon Sep 17 00:00:00 2001
From: Garret Premo <garretpremo@gmail.com>
Date: Thu, 19 Dec 2024 10:10:13 -0500
Subject: [PATCH] fix: openvpn/start.sh add condition to prevent appending
 duplicative name server entries

---
 openvpn/start.sh | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/openvpn/start.sh b/openvpn/start.sh
index 3ef9456..4b858ae 100755
--- a/openvpn/start.sh
+++ b/openvpn/start.sh
@@ -144,9 +144,13 @@ for name_server_item in "${name_server_list[@]}"; do
 	# strip whitespace from start and end of lan_network_item
 	name_server_item=$(echo "${name_server_item}" | sed -e 's~^[ \t]*~~;s~[ \t]*$~~')
 
-	echo "[info] Adding ${name_server_item} to resolv.conf" | ts '%Y-%m-%d %H:%M:%.S'
-	echo "nameserver ${name_server_item}" >> /etc/resolv.conf
-
+ 	# check if name server is already defined
+ 	existing_name_servers=$(awk "/^nameserver ${name_server_item}$/" /etc/resolv.conf | wc -l)
+  
+  	if [ "$existing_name_servers" -eq 0 ]; then
+		echo "[info] Adding ${name_server_item} to resolv.conf" | ts '%Y-%m-%d %H:%M:%.S'
+		echo "nameserver ${name_server_item}" >> /etc/resolv.conf
+	fi
 done
 
 if [[ -z "${PUID}" ]]; then