drivers/azure/util.go
func (d *Driver) ipAddress() (ip string, err error) {
	c, err := d.newAzureClient()
	if err != nil {
		return "", err
	}

	var ipType string
	if d.UsePrivateIP || d.NoPublicIP {
		ipType = "Private"
		ip, err = c.GetPrivateIPAddress(d.ResourceGroup, d.naming().NIC())
	} else {
		ipType = "Public"
		ip, err = c.GetPublicIPAddress(d.ResourceGroup,
			d.naming().IP(),
			d.DNSLabel != "")
	}

	log.Debugf("Retrieving %s IP address...", ipType)
	if err != nil {
		return "", fmt.Errorf("Error querying %s IP: %v", ipType, err)
	}
	if ip == "" {
		log.Debugf("%s IP address is not yet allocated.", ipType)
	}
	return ip, nil
}
func (d *Driver) ipAddress() (ip string, err error) {
	c, err := d.newAzureClient()
	if err != nil {
		return "", err
	}

	var ipType string
	if d.UsePrivateIP || d.NoPublicIP {
		ipType = "Private"
		ip, err = c.GetPrivateIPAddress(d.ResourceGroup, d.naming().NIC())
	} else {
		ipType = "Public"
		ip, err = c.GetPublicIPAddress(d.ResourceGroup,
			d.naming().IP(),
			d.DNSLabel != "")
	}

	log.Debugf("Retrieving %s IP address...", ipType)
	if err != nil {
		return "", fmt.Errorf("Error querying %s IP: %v", ipType, err)
	}
	if ip == "" {
		log.Debugf("%s IP address is not yet allocated.", ipType)
	}
	return ip, nil
}
// ipAddress returns machine’s private or public IP address according to the
// configuration. If no IP address is found it returns empty string.