#!/bin/bash

declare status=0
declare hosts=0
declare hosts_up=0

ip_bin=`which ip`
excludes="foo"

for i in `$ip_bin address show | grep inet | grep peer | egrep -v "(${excludes})" | awk '{ print $7 }'`; do
    iface="$i"
    hosts=$(($hosts+1))
    ip=`$ip_bin address show dev "$i" | grep inet | awk '{ print $4 }' | awk -F"/" '{ print $1 }'`

    if ! ping -W2 -c1 "$ip" >/dev/null; then
      status=1
      down="${down}${iface} "
    else
      hosts_up="$(($hosts_up+1))"
    fi
done

if [ "$status" -eq 0 ]; then
  echo "[OK] $hosts_up of $hosts peerings are up"
else
  echo "[CRITICAL] $down"
fi

exit "$status"