Latest revision as of 08:44, 27 September 2014

1 Zone or Ifindex
- 1.1 Looking at ipconfig for interface Zone
- 1.2 Interface parameters
2 Windows 7 Interface Identifier
- 2.1 Using EUI-64 identifiers
3 Solicited-Node Multicast Address
4 Prefer IPv4 instead of IPv6
- 4.1 Disable IPv6 using Regedit
- 4.2 Prefer IPv4 over IPv6 using Hurricane Electric
  - 4.2.1 Low precedence on IPv6

Zone or Ifindex

The IPv6 Link-Local Address is local on the link (interface) and the node has several links (interfaces) - all with the same IPv6 Link-Local prefix. Because of this it's necessary to identify the Link in question. For example the Link-Local address from below fe80::221:86ff:fea0:ce84%12 where fe80::221:86ff:fea0:ce84 is the address and %12 is the Zone identifier which identifies the Link. In this case interface 12 is the "Local Area Connection". Which is my Ethernet adapter.

C:\><input>netsh interface ipv6 show addresses</input>

Interface 1: Loopback Pseudo-Interface 1

Addr Type  DAD State   Valid Life Pref. Life Address
---------  ----------- ---------- ---------- ------------------------
Other      Preferred     infinite   infinite ::1

Interface 11: Wireless Network Connection
Other      Preferred     infinite   infinite <notice>fe80::221:6bff:fe52:e36%11</notice>

Interface 21: Wireless Network Connection 2
Other      Deprecated    infinite   infinite <notice>fe80::221:6bff:fe52:e37%21</notice>

Interface 12: Local Area Connection
Other      Preferred     infinite   infinite <notice>fe80::221:86ff:fea0:ce84%12</notice>

Interface 23: isatap.home
Other      Preferred     infinite   infinite <notice>fe80::5efe:192.168.1.13%23</notice>
Other      Preferred     infinite   infinite <notice>fe80::5efe:192.168.1.15%23</notice>

Interface 14: Bluetooth Network Connection
Other      Deprecated    infinite   infinite <notice>fe80::222:68ff:fee7:7f95%14</notice>

Looking at ipconfig for interface Zone

C:\Users><input>ipconfig/all</input>

Windows IP Configuration

   Host Name . . . . . . . . . . . . : VIHCA-HOT-HETH
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : tekkom.local
Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : tekkom.local
   Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
   Physical Address. . . . . . . . . : 00-21-86-A0-CE-84
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:16d8:dd85:139:29f6:1f1c:b88f:cb25(Preferred)
   Temporary IPv6 Address. . . . . . : 2001:16d8:dd85:139:fc50:5ffa:d07d:8ab9(Preferred)
   Link-local IPv6 Address . . . . . : <notice>fe80::29f6:1f1c:b88f:cb25%12(Preferred)</notice>
   IPv4 Address. . . . . . . . . . . : 192.168.139.73(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 13. maj 2011 07:36:32
   Lease Expires . . . . . . . . . . : 13. maj 2011 08:21:32
   Default Gateway . . . . . . . . . : <notice>fe80::218:18ff:fe7c:b441%12</notice>
                                       192.168.139.1
   DHCP Server . . . . . . . . . . . : 172.16.4.66
   DNS Servers . . . . . . . . . . . : 172.16.4.66
   NetBIOS over Tcpip. . . . . . . . : Enabled

Interface parameters

C:\><input>netsh interface ipv6 show interface level=verbose</input>

Interface Local Area Connection Parameters
----------------------------------------------
IfLuid                             : ethernet_6
<notice>IfIndex                            : 12</notice>
State                              : connected
Metric                             : 10
Link MTU                           : 1500 bytes
Reachable Time                     : 27000 ms
Base Reachable Time                : 30000 ms
Retransmission Interval            : 1000 ms
DAD Transmits                      : 1
Site Prefix Length                 : 64
Site Id                            : 1
Forwarding                         : disabled
Advertising                        : disabled
Neighbor Discovery                 : enabled
Neighbor Unreachability Detection  : enabled
Router Discovery                   : enabled
Managed Address Configuration      : disabled
Other Stateful Configuration       : disabled
Weak Host Sends                    : disabled
Weak Host Receives                 : disabled
Use Automatic Metric               : enabled
Ignore Default Routes              : disabled
Advertised Router Lifetime         : 1800 seconds
Advertise Default Route            : disabled
Current Hop Limit                  : 64
Force ARPND Wake up patterns       : disabled
Directed MAC Wake up patterns      : disabled

Windows 7 Interface Identifier

C:\><input>netsh interface ipv6 show global</input>
Querying active state...

General Global Parameters
---------------------------------------------
Default Hop Limit                   : 128 hops
Neighbor Cache Limit                : 256 entries per interface
Route Cache Limit                   : 128 entries per compartment
Reassembly Limit                    : 32981216 bytes
ICMP Redirects                      : enabled
Source Routing Behavior             : dontforward
Task Offload                        : enabled
Dhcp Media Sense                    : enabled
Media Sense Logging                 : disabled
MLD Level                           : all
MLD Version                         : version3
Multicast Forwarding                : disabled
Group Forwarded Fragments           : disabled
<notice>Randomize Identifiers               : enabled</notice>
Address Mask Reply                  : disabled

Current Global Statistics
---------------------------------------------
Number of Compartments              : 1
Number of NL clients                : 7
Number of FL providers              : 4

Using EUI-64 identifiers

C:\><input>netsh interface ipv6 set global randomizeidentifiers=disable</input>

Solicited-Node Multicast Address

First find Unicast address

C:\><input>netsh interface ipv6 show addresses 12</input>

Address fe80::221:86ff:fe<notice>a0:ce84</notice>%12 Parameters
---------------------------------------------------------
Interface Luid     : Local Area Connection
Scope Id           : 0.12
Valid Lifetime     : infinite
Preferred Lifetime : infinite
DAD State          : Preferred
Address Type       : Other

Find Solicited-Node Multicast address

C:\><input>netsh interface ipv6 show joins 12</input>
Interface 12: Local Area Connection

Multicast Address : ff01::1
Scope             : 0
References        : 0
Last Reporter?    : Yes

Multicast Address : ff02::1
Scope             : 0
References        : 0
Last Reporter?    : Yes

Multicast Address : ff02::c
Scope             : 0
References        : 1
Last Reporter?    : Yes

Multicast Address : ff02::1:3
Scope             : 0
References        : 1
Last Reporter?    : Yes

Multicast Address : ff02::1:ff<notice>a0:ce84</notice>
Scope             : 0
References        : 1
Last Reporter?    : Yes

IPv6 neighbours Physical Address

C:\><input>netsh interface ipv6 show nei 12</input>

Interface 12: Local Area Connection


Internet Address                              Physical Address   Type
--------------------------------------------  -----------------  -----------
ff02::2                                       33-33-00-00-00-02  Permanent
ff02::16                                      33-33-00-00-00-16  Permanent
ff02::1:2                                     33-33-00-01-00-02  Permanent
ff02::1:3                                     33-33-00-01-00-03  Permanent
ff02::1:ffa0:ce84                             33-33-ff-a0-ce-84  Permanent

Delete Autoconfigured IPv6 address

C:\><input>netsh interface ipv6 delete address 12 2001:16d8:dd85:a200:221:86ff:fea0:ce84</input>

Prefer IPv4 instead of IPv6

Disable IPv6 using Regedit

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents

Note If the DisabledComponents entry is unavailable, you must create it. (32 bit DWORD)

0x0 to enable all IPv6 components.
- Note The value "0" is the default setting.
0xffffffff to disable all IPv6 components, except the IPv6 loopback interface. This value also configures Windows Vista to use Internet Protocol version 4 (IPv4) instead of IPv6 in prefix policies.
0x20 to use IPv4 instead of IPv6 in prefix policies.
0x10 to disable native IPv6 interfaces.
0x01 to disable all tunnel IPv6 interfaces.
0x11 to disable all IPv6 interfaces except for the IPv6 loopback interface.

Prefer IPv4 over IPv6 using Hurricane Electric

Low precedence on IPv6

Hurricane electric use the 2001:470::/32 prefix. (Look at your IPv6 address and adjust as needed). In the command it's given a very low precedence - 3.

C:\><input>netsh interface ipv6 add prefixpolicy 2001:470::/32 3 6</input>
C:\><input>netsh interface ipv6 show prefixpolicies</input>
Forespørger om aktiv tilstand...

Rækkefølge  Navn  Præfiks
----------  -----  --------------------------------
        50      0  ::1/128
        40      1  ::/0
        30      2  2002::/16
        20      3  ::/96
        10      4  ::ffff:0:0/96
         5      5  2001::/32
         3      6  2001:470::/32

===Higher precedence on IPv6 than IPv4 Remove the low precedence given above.

C:\Windows\System32><input>netsh interface ipv6 delete prefixpolicy prefix=2001:470::/32</input>

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