Bash function for validating IPv4 address

valid_ip.sh

#!/bin/bash

function valid_ip()
{
    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
        IFS='.' read -ra ip <<< "$ip"
        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
        stat=$?
    fi

    return $stat
}

# testing
valid_ip 127.0.0.1 && echo valid
valid_ip 327.0.0.1 || echo invalid
valid_ip 1270.0.1 || echo invalid