--- packages/network/iptables/scripts/iptables_helper   2019-12-03 12:42:50.416112429 +0000
+++ packages/network/iptables/scripts/iptables_helper   2019-12-03 12:44:01.075990332 +0000
@@ -18,10 +18,12 @@
 }

 check_tether() {
-    if [ -n "`$CONNMANCTL technologies | grep -e -A5 technology/wifi -e 'Tethering = True'`" ]; then
+    if [ -n "`$CONNMANCTL technologies | grep -A5 -e technology/wifi | grep 'Tethering = True'`" ]; then
         TECHNOLOGY="wifi"
-    elif [ -n "`$CONNMANCTL technologies | grep -e -A5 technology/ethernet -e 'Tethering = True'`" ]; then
+    elif [ -n "`$CONNMANCTL technologies | grep -A5 -e technology/ethernet | grep 'Tethering = True'`" ]; then
         TECHNOLOGY="ethernet"
+    else
+        return 0
     fi
     $CONNMANCTL tether $TECHNOLOGY off
     sleep 1