config_if_err() {
  echo "graph_order rcvd trans"
  echo "graph_title $1 errors"
  echo "graph_args --base 1000"
  echo "graph_vlabel packets in (-) / out (+) per \${graph_period}"
  echo "graph_category network"
  echo "graph_info This graph shows the amount of errors on the $1 network interface."
  echo "rcvd.label packets"
  echo "rcvd.type COUNTER"
  echo "rcvd.graph no"
  echo "rcvd.warning 1"
  echo "trans.label packets"
  echo "trans.type COUNTER"
  echo "trans.negative rcvd"
  echo "trans.warning 1"
}
fetch_if_err() {
  IINFO=$(grep "$1:" /proc/net/dev | cut -d: -f2 | sed -e 's/  / /g')
  echo "rcvd.value" $(echo $IINFO | cut -d\  -f3)
  echo "trans.value" $(echo $IINFO | cut -d\  -f11)
}