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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def _check_ip_available(ip_addr):
    '''
    Proxmox VMs refuse to start when the IP is already being used.
    This function can be used to prevent VMs being created with duplicate
    IP's or to generate a warning.
    '''
    for vm_name, vm_details in six.iteritems(get_resources_vms(includeConfig=True)):
        vm_config = vm_details['config']
        if ip_addr in vm_config['ip_address'] or vm_config['ip_address'] == ip_addr:
            log.debug('IP "%s" is already defined', ip_addr)
            return False

    log.debug('IP \'%s\' is available to be defined', ip_addr)
    return True