def get_macs(mac, count, offset=1):
    """
    Take mac as start mac returns the count of macs in a list
    """
    mac_list = list()
    for i in range(count):
        mac_address = "{:012X}".format(int(mac, 16) + offset * i)
        mac_address = ":".join(
            format(s, "02x") for s in bytearray.fromhex(mac_address)
        )
        mac_list.append(mac_address)
    return mac_list