Index: tools/setup_virtual_can.sh
===================================================================
diff -u -r4bdb012848d1b59be5edc31d677b77b9d95f6190 -r8d1f61499650e23dac6f857e48daad42180db949
--- tools/setup_virtual_can.sh	(.../setup_virtual_can.sh)	(revision 4bdb012848d1b59be5edc31d677b77b9d95f6190)
+++ tools/setup_virtual_can.sh	(.../setup_virtual_can.sh)	(revision 8d1f61499650e23dac6f857e48daad42180db949)
@@ -14,17 +14,19 @@
 # @date (original) 01-Apr-2020
 #
 ############################################################################
-sudo ifconfig vcan0 down
-sudo ifconfig vcan1 down
-sudo ip link delete dev vcan0
-sudo ip link delete dev vcan1
+iface="can0"
+if [ "$#" -gt 1 ]; then
+    echo "Please provide only one can interface."
+    echo "Usage (defaults to can0): ./bring_can_iface_down.sh "
+    echo "     Use <iface> instead: setup_canbus.sh <iface>"
+    exit 1
+elif [ "$#" -eq 1 ]; then
+    iface="$1"
+fi
 
-sudo ip link add dev vcan0 type vcan
-sudo ip link add dev vcan1 type vcan
+sudo ip link add dev "$iface" type vcan
 
-sudo ip link set vcan0 up
-sudo ifconfig vcan0 txqueuelen 10000
+sudo ip link set "$iface" up
+sudo ifconfig "$iface" txqueuelen 10000
 
-sudo ip link set vcan1 up
-sudo ifconfig vcan1 txqueuelen 10000