[package] firewall: prevent duplicate values in interface state vars

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26382 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 4 insertions, 1 deletions

diff --git a/package/firewall/files/lib/core_interface.sh b/package/firewall/files/lib/core_interface.sh
index aff664180..ed6a4b150 100644
--- a/package/firewall/files/lib/core_interface.sh
+++ b/package/firewall/files/lib/core_interface.sh
@@ -4,7 +4,10 @@ fw__uci_state_add() {
 	local var="$1"
 	local item="$2"
 
-	local val="$(uci_get_state firewall core $var)"
+	local val=" $(uci_get_state firewall core $var) "
+	val="${val// $item / }"
+	val="${val# }"
+	val="${val% }"
 	uci_set_state firewall core $var "${val:+$val }$item"
 }