diff --git a/package/cnsztl/luci-app-chinadns/files/root/etc/init.d/chinadns b/package/cnsztl/luci-app-chinadns/files/root/etc/init.d/chinadns
index 235465f8db..a4c0f9fd60 100755
--- a/package/cnsztl/luci-app-chinadns/files/root/etc/init.d/chinadns
+++ b/package/cnsztl/luci-app-chinadns/files/root/etc/init.d/chinadns
@@ -39,12 +39,14 @@ append_parm() {
 start_chinadns() {
 	local enable
 	local yn_use_proxy
+	local local_subnet
+	local foreign_subnet
+
 	local local_subnet=$(echo `curl -4 -s members.3322.org/dyndns/getip | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.'`0)
 	config_get_bool enable $1 enable
 	[ "$enable" = 1 ] || return 0
 	config_get_bool yn_use_proxy $1 yn_use_proxy
-	[ "$yn_use_proxy" = 0 ] && local foreign_subnet && config_get foreign_subnet $1 foreign_subnet
-	[ "$yn_use_proxy" = 1 ] && local foreign_subnet=$(echo `curl -4 -s ip.sb | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.'`0)
+	[ "$yn_use_proxy" = 1 ] && local foreign_subnet=$(echo `curl -4 -s ip.sb | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.'`0) || config_get foreign_subnet $1 foreign_subnet
 	append_parm $1 port "-p"
 	append_parm $1 server "-s"
 	append_parm $1 chnroute "-c"
@@ -55,6 +57,7 @@ start_chinadns() {
 }
 
 start() {
+	stop
 	config_load chinadns
 	config_foreach start_chinadns chinadns
 }