import re


def ipv4(value: str):
    """
    Validator IPv4 address
    Example Result:
        [0.0.0.0,
        255.255.255.255,
        17.0.0.1]
    """
    _ipv4_pat = r'(?:[\d]{1,3}\.){3}[\d]{1,3}'
    return re.findall(_ipv4_pat, value)