I'm making a script that validate an IP address. I do this:

```
read pool
checkIp()
{
    local  ip=$1
    local  stat=1

    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
        OIFS=$IFS
        IFS='.'
        ip=($ip)
        IFS=$OIFS
        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
        stat=$?

    fi
    return $stat
}

checkIp $pool
if [ $? -eq 0 ]
    then
        echo "valid"
    else
        echo "invalid"
fi

```

The problem is that now the requirement is to valid that from the 2nd octet the input can contain the wildcard "\*" (i think is better to use CIDR notation but is not the case), and now i can't use `-le` because if there is not a number, it fails.

I'd tried some forms but all conversions fails.