IFS

  TAP_PATH="/dev/tap$(</sys/class/net/${VM_NET_TAP}/ifindex)"

  # create dev file (there is no udev in container: need to be done manually)

  IFS=: read MAJOR MINOR < <(cat /sys/class/net/${VM_NET_TAP}/macvtap/${TAP_PATH##*/}/uevent)

  IFS=: read major minor < <(cat /sys/devices/virtual/net/tap2/tap*/dev)

  if [[ "x${MAJOR}" != "x" ]]; then

    echo "Info: Please make sure that the following docker setting is used: --device-cgroup-rule='c ${MAJOR}:* rwm'"