diff --git a/openmptcprouter/files/bin/omr-mtu b/openmptcprouter/files/bin/omr-mtu
index 79807949b..20390a878 100755
--- a/openmptcprouter/files/bin/omr-mtu
+++ b/openmptcprouter/files/bin/omr-mtu
@@ -5,7 +5,8 @@ INTERFACE="$1"
 HOSTNAME="$2"
 
 #count=$(ping -q -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME | grep -cE 'Message too long|100% packet loss')
-count=$(ping -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME 2>&1 | grep -c 'Message too long')
+#count=$(ping -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME 2>&1 | grep -c 'Message too long')
+count=$(ping -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME 2>&1 | grep -cE 'Message too long|100% packet loss')
 
 while [ $count -eq 1 ]; do
 	PKT_SIZE=$((PKT_SIZE - 1))
@@ -13,7 +14,8 @@ while [ $count -eq 1 ]; do
 		exit 0
 	fi
 	#count=$(ping -q -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME | grep -cE 'Message too long|100% packet loss')
-	count=$(ping -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME 2>&1 | grep -c 'Message too long')
+	#count=$(ping -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME 2>&1 | grep -c 'Message too long')
+	count=$(ping -w 1 -M do -c 1 -s $PKT_SIZE -I $INTERFACE $HOSTNAME 2>&1 | grep -cE 'Message too long|100% packet loss')
 done
 
 printf "$((PKT_SIZE + 28))"
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