if i > 0 {
			buf = append(buf, ':')
		}
		buf = append(buf, hexDigit[b>>4])
		buf = append(buf, hexDigit[b&0xF])
	}
	return string(buf)
}

// ParseMAC parses s as an IEEE 802 MAC-48, EUI-48, EUI-64, or a 20-octet
// IP over InfiniBand link-layer address using one of the following formats:
//
//	00:00:5e:00:53:01
//	02:00:5e:10:00:00:00:01
//	00:00:00:00:fe:80:00:00:00:00:00:00:02:00:5e:10:00:00:00:01

	links := map[string]string{
		"/returns/a/dev":   "/dev/sde",
		"/returns/non/dev": "/sys/block",
		"/dev/disk/by-path/127.0.0.1:3260-eui.02004567A425678D-lun-0": "/dev/sda",
		"/dev/disk/by-path/127.0.0.3:3260-eui.03004567A425678D-lun-0": "/dev/sdb",
		"/dev/dm-2": "/dev/dm-2",
		"/dev/dm-3": "/dev/dm-3",
		"/dev/sdc":  "/dev/sdc",
		"/dev/sde":  "/dev/sde",
	}
	return links[path], nil

	MTU          int          // maximum transmission unit
	Name         string       // e.g., "en0", "lo0", "eth0.100"
	HardwareAddr HardwareAddr // IEEE MAC-48, EUI-48 and EUI-64 form
	Flags        Flags        // e.g., FlagUp, FlagLoopback, FlagMulticast
}

type Flags uint

const (
	FlagUp           Flags = 1 << iota // interface is administratively up

		t.Errorf("extractPortalAndIqn: got %v %s %s", err, portal, iqn)
	}
	devicePath = "127.0.0.1:3260-eui.02004567A425678D-lun-0"
	portal, iqn, err = extractPortalAndIqn(devicePath)
	if err != nil || portal != "127.0.0.1:3260" || iqn != "eui.02004567A425678D" {
		t.Errorf("extractPortalAndIqn: got %v %s %s", err, portal, iqn)
	}

	} else {
		if !strings.HasPrefix(iscsi.IQN, "iqn") && !strings.HasPrefix(iscsi.IQN, "eui") && !strings.HasPrefix(iscsi.IQN, "naa") {
			allErrs = append(allErrs, field.Invalid(fldPath.Child("iqn"), iscsi.IQN, "must be valid format starting with iqn, eui, or naa"))
		} else if strings.HasPrefix(iscsi.IQN, "iqn") && !iscsiInitiatorIqnRegex.MatchString(iscsi.IQN) {

	if ind1 < 0 {
		return "", "", fmt.Errorf("iscsi detach disk: no portal in %s", device)
	}
	portal := device[0:ind1]
	ind2 := strings.Index(device, "iqn.")
	if ind2 < 0 {
		ind2 = strings.Index(device, "eui.")
	}
	if ind2 < 0 {
		return "", "", fmt.Errorf("iscsi detach disk: no iqn in %s", device)
	}
	ind := strings.LastIndex(device, "-lun-")
	iqn := device[ind2:ind]
	return portal, iqn, nil
}

    return new TeredoInfo(server, client, port, flags);
  }

  /**
   * Evaluates whether the argument is an ISATAP address.
   *
   * <p>From RFC 5214: "ISATAP interface identifiers are constructed in Modified EUI-64 format [...]
   * by concatenating the 24-bit IANA OUI (00-00-5E), the 8-bit hexadecimal value 0xFE, and a 32-bit
   * IPv4 address in network byte order [...]"
   *

    return new TeredoInfo(server, client, port, flags);
  }

  /**
   * Evaluates whether the argument is an ISATAP address.
   *
   * <p>From RFC 5214: "ISATAP interface identifiers are constructed in Modified EUI-64 format [...]
   * by concatenating the 24-bit IANA OUI (00-00-5E), the 8-bit hexadecimal value 0xFE, and a 32-bit
   * IPv4 address in network byte order [...]"
   *

						FSType:       "ext4",
						ReadOnly:     false,
					},
				},
			},
		}, {
			name: "valid IQN: eui format",
			vol: core.Volume{
				Name: "iscsi",
				VolumeSource: core.VolumeSource{
					ISCSI: &core.ISCSIVolumeSource{
						TargetPortal: "127.0.0.1",
						IQN:          "eui.0123456789ABCDEF",
						Lun:          1,
						FSType:       "ext4",
						ReadOnly:     false,
					},