diff --git a/openmptcprouter/files/bin/omr-iperf b/openmptcprouter/files/bin/omr-iperf
index 818b0385d..1b1eae790 100755
--- a/openmptcprouter/files/bin/omr-iperf
+++ b/openmptcprouter/files/bin/omr-iperf
@@ -27,13 +27,12 @@ config_foreach get_auth_data server
 if [ -n "$PASSWORD" ] && [ -n "$USER" ] && [ -n "$KEY" ]; then
 	echo $KEY | base64 -d > /tmp/iperf.pem
 	#IPERF3_PASSWORD=$PASSWORD iperf3 --username $USER --rsa-public-key-path /tmp/iperf.pem --use-pkcs1-padding -c $HOST -p $PORT ${@}
-	echo "machin: $0"
 	case "$0" in
 		*proxy)
 			IPERF3_PASSWORD=$PASSWORD iperf3 --username $USER --rsa-public-key-path /tmp/iperf.pem -c $HOST -p $PORT --socks5 127.0.0.1:1111 ${@}
 		;;
 		*vpn)
-			VPNIP=$(ip r show default metric 0 | awk '{ print $3 }' | tr -d '\n')
+			VPNIP=$(ip r show default metric 0 | awk '{ if (length($3) != 0) { print $3; exit; } }' | tr -d '\n')
 			IPERF3_PASSWORD=$PASSWORD iperf3 --username $USER --rsa-public-key-path /tmp/iperf.pem -c $VPNIP -p $PORT
 		;;
 		*)