diff --git a/net/mwan3/files/usr/sbin/mwan3track b/net/mwan3/files/usr/sbin/mwan3track
index 1d89b0d9d..64911e94f 100755
--- a/net/mwan3/files/usr/sbin/mwan3track
+++ b/net/mwan3/files/usr/sbin/mwan3track
@@ -1,78 +1,74 @@
 #!/bin/sh
 
-[ -z "$12" ] && echo "Error: should not be started manually" && exit 0
+main() {
 
-if [ -e /var/run/mwan3track-$1.pid ] ; then
-	kill $(cat /var/run/mwan3track-$1.pid) &> /dev/null
-	rm /var/run/mwan3track-$1.pid &> /dev/null
-fi
+	[ -z "$12" ] && echo "Error: should not be started manually" && exit 0
 
-echo "$$" > /var/run/mwan3track-$1.pid
-
-score=$(($7+$8))
-track_ips=$(echo $* | cut -d ' ' -f 12-99)
-host_up_count=0
-lost=0
-sleep_time=0
-
-while true; do
-
-	sleep_time=$6
-
-	for track_ip in $track_ips; do
-		ping -I $2 -c $4 -W $5 -s $9 -q $track_ip &> /dev/null
-		if [ $? -eq 0 ]; then
-			let host_up_count++
-		else
-			let lost++
-		fi
-	done
-
-	if [ $host_up_count -lt $3 ]; then
-		let score--
-
-		if [ $score -lt $8 ]; then
-			score=0
-		else
-			sleep_time=$10
-		fi
-
-		if [ $score -eq $8 ]; then
-
-			logger -t mwan3track -p notice "Interface $1 ($2) is offline"
-			env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
-			score=0
-
-		fi
-
-	else
-
-		if [ $score -lt $(($7+$8)) ] && [ $lost -gt 0 ]; then
-
-			logger -t mwan3track -p info "Lost $(($lost*$4)) ping(s) on interface $1 ($2)"
-
-		fi
-
-		let score++
-		lost=0
-
-		if [ $score -gt $8 ]; then
-			score=$(($7+$8))
-		elif [ $score -le $8 ]; then
-			sleep_time=$11
-		fi
-
-		if [ $score -eq $8 ]; then
-
-			logger -t mwan3track -p notice "Interface $1 ($2) is online"
-			env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
-			rm /var/run/mwan3track-$1.pid
-			exit 0
-		fi
+	if [ -e /var/run/mwan3track-$1.pid ] ; then
+		kill $(cat /var/run/mwan3track-$1.pid) &> /dev/null
+		rm /var/run/mwan3track-$1.pid &> /dev/null
 	fi
 
-	host_up_count=0
-	sleep $sleep_time
-done
+	echo "$$" > /var/run/mwan3track-$1.pid
 
-exit 1
+	local score=$(($7+$8))
+	local track_ips=$(echo $* | cut -d ' ' -f 12-99)
+	local host_up_count=0
+	local lost=0
+	local sleep_time=0
+
+	while true; do
+
+		sleep_time=$6
+
+		for track_ip in $track_ips; do
+			ping -I $2 -c $4 -W $5 -s $9 -q $track_ip &> /dev/null
+			if [ $? -eq 0 ]; then
+				let host_up_count++
+			else
+				let lost++
+			fi
+		done
+
+		if [ $host_up_count -lt $3 ]; then
+			let score--
+
+			if [ $score -lt $8 ]; then
+				score=0
+			else
+				sleep_time=$10
+			fi
+
+			if [ $score -eq $8 ]; then
+				logger -t mwan3track -p notice "Interface $1 ($2) is offline"
+				env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
+				score=0
+			fi
+		else
+			if [ $score -lt $(($7+$8)) ] && [ $lost -gt 0 ]; then
+				logger -t mwan3track -p info "Lost $(($lost*$4)) ping(s) on interface $1 ($2)"
+			fi
+
+			let score++
+			lost=0
+
+			if [ $score -gt $8 ]; then
+				score=$(($7+$8))
+			elif [ $score -le $8 ]; then
+				sleep_time=$11
+			fi
+
+			if [ $score -eq $8 ]; then
+				logger -t mwan3track -p notice "Interface $1 ($2) is online"
+				env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
+				rm /var/run/mwan3track-$1.pid
+				exit 0
+			fi
+		fi
+
+		host_up_count=0
+		sleep $sleep_time
+	done
+}
+
+main "$@"