diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init
index df885d6829..6a849f2459 100644
--- a/package/network/services/dnsmasq/files/dnsmasq.init
+++ b/package/network/services/dnsmasq/files/dnsmasq.init
@@ -1124,7 +1124,7 @@ dnsmasq_start()
 	config_get dns_port "$cfg" port 53
 	if [ "$dns_redirect" = 1 ]; then
 		iptables -t nat -A PREROUTING -m comment --comment "DNSMASQ" -p udp --dport 53 -j REDIRECT --to-ports $dns_port
-		[ -n "$(command -v ip6tables)" ] && ip6tables -t nat -A PREROUTING -m comment --comment "DNSMASQ" -p udp --dport 53 -j REDIRECT --to-ports $dnsport
+		[ -n "$(command -v ip6tables)" ] && ip6tables -t nat -A PREROUTING -m comment --comment "DNSMASQ" -p udp --dport 53 -j REDIRECT --to-ports $dns_port
 	fi
 }
 
@@ -1145,19 +1145,9 @@ dnsmasq_stop()
 
 iptables_clear()
 {
-	nums=$(iptables -t nat -n -L PREROUTING 2>/dev/null | grep -c "DNSMASQ")
-	if [ -n "$nums" ]; then
-		until [ "$nums" = 0 ]
-		do
-			rules=$(iptables -t nat -n -L PREROUTING --line-num 2>/dev/null | grep "DNSMASQ" | awk '{print $1}')
-			for rule in $rules
-			do
-				iptables -t nat -D PREROUTING $rule 2> /dev/null
-				break
-			done
-			nums=$(expr $nums - 1)
-		done
-	fi
+	config_get dns_port "$cfg" port 53
+	iptables -t nat -D PREROUTING -m comment --comment "DNSMASQ" -p udp --dport 53 -j REDIRECT --to-ports $dns_port 2>"/dev/null"
+	[ -n "$(command -v ip6tables)" ] && ip6tables -t nat -D PREROUTING -m comment --comment "DNSMASQ" -p udp --dport 53 -j REDIRECT --to-ports $dns_port 2>"/dev/null"
 }
 
 add_interface_trigger()