def __init__(self, ip, fqdn=''):
        self.ip_dottedquad = ip
        self.ip_num = dottedquad_to_num(ip)
        self.fqdn = fqdn
        self.rdns = ''
        self.ports = []
        self.os = ''
        self.mac_address = ''
        self.mac_address_vendor = ''
        self.network_distance = ''