IPv6 Course part 1: Activation and basics

Any computer on the Internet is assigned a number. But are the currently used Internet Protocol Version 4 (IPv4) maximum 4 Billion. (2 high 32) Numbers available. Because they can be exploited but not to the last point perfectly, These numbers are running out. Therefore it is now gradually the new Internet Protocol Version 6 (IPv6) introduced, the more numbers provides as grains of sand all over the world.
I have learned in recent days it very difficult to IPv6. Thus, the other goes faster, I sum up this course together like chapters in a number of my knowledge. Today I start with the initial: The principles and enable IPv6. Basically, I am counting forward IPv4 knowledge.

At the start and even play first, some notes:

Most ISPs allow even (October 2010) no direct IPv6 assignment. Therefore, the Fritzbox provides several ways, to get a public IPv6 address. You can be set under:
“Internet / Access data / IPv6”, There “For IPv6 connections use always a tunneling protocol” Select.
In the following tunnel options available are among others:

6To4:
This is the tunnel server on the IP address 192.88.99.1 addressed, It gives it several times on the Internet (Anycast) – all 6to4 Tunneling Server use. This works without, that one somewhere needs to register, However not on UMTS.

6RD:
is the same Protocol as 6to4, except that here the tunnel server is manually specified. To however you must get the information from an appropriate provider.

SixXS:
There can be a solid, get free own IPv6 subnet. For this you must register with www.sixxs.net trouble. The activation of an own network takes several hours.

The best way is to use 6to4, What was done in the following descriptions. It should always work, If the Fritzbox is a public IPv4 and not behind a firewall (that is why it does not work, When the Internet connection via UMTS).

If the IPv6 connection is successfully completed, Displays the Fritz box on the home page of the received IPv6 subnet prefix. The IPv6 address, She used the Fritzbox even, can see “Internet / Access data / IPv6” be checked. There is for example top.
2002:5d15:b50b:8000:21f:3000:abf3:ab09/64

The “/64” Specifies, How many bits of links the subnet (Prefix) Mark, that has received the Fritzbox. All digits after that fall within the same subnet. The computer connected to the Fritz box select an IP with the same prefix.

Is enabled by default starting with Vista IPv6 in Windows, in current versions of Linux, as Ubuntu 9.10 also. In Windows XP must you install IPv6: Netzwerkverbindungen öffnen / Netzwerkschnittstelle auswählen / Eigenschaften / Installieren / Protokoll / Microsoft / Ipv6

Then the Fritzbox should have notified automatically the public IPv6 subnet prefix connected systems. All connected computers, the IPv6 talk, Select then even an IPv6 address within the subnet.
You can view the selected IPv6 addresses with
# Windows
Windows-Taste+R / "cmd" eingeben / "OK" drücken
netsh interface ipv6 addr

# Linux
ip addr

now IPv6 can be tested:
ping6 2002:5d15:b50b:8000:21f:3000:abf3:ab09 <- IP of the Fritzbox, that was above read.

In the Web browser, you must include the IPv6 in square brackets:
http://[2002:5d15:b50b:8000:21f:3000:abf3:ab09] <- IP of the Fritzbox, that was above read.
http://[2001:4810::110]
http://[2a02:2e0:3fe:100::7]
http://[2a00:1450:8004::67]

Two colons in a row are used as an abbreviation: The system replaces the two colon with so many zeros, that from the total address 128 Bit (Length of IPv6 addresses) be.

About http://whatismyv6.com/ can you see, with what IP it is in the Internet and the IPv6 address is used. Can that be Firefox in any Web page with this Add on “ShowIP” display.

No DHCP or manual IP configuration is by default used for IPv6 (both is possible but). Rather the computer assign to itself automatically IPv6 addresses are (autoconfiguration). When a new computer is connected to a router, He sends a message to all routers (Multicast), You should tell him the prefix for the subnet. This makes the Fritzbox and the connected computer selects an IPv6 from the assigned subnet.

As far as first for today.
In the next few days: At the same time using multiple IPv6 addresses on a computer, to both a fixed IPv6 address to have and at the same time a constantly changing, to obtain more anonymity on the net.

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2 Responses to IPv6 Course part 1: Activation and basics

  1. Stefan Zimmermann says:

    Hi Robert,

    because here yes to a decent and I suspect is also a most accurate tutorial be should I would ask you to correct as follows below:

    “If the IPv6 connection is successfully completed, Displays the Fritz box on the home page of the received IPv6 subnet prefix. The IPv6 address, She used the Fritzbox even, can see "Internet / Access data / IPv6 "will be looked. There is for example top.
    2002:5D15:b50b:8000:21f:3000:abf3:ab09/64”

    The address: 2002:5D15:b50b:8000:21f:3000:abf3:ab09/64 in this example would
    no sense a bit string result since the spelling of 192 Would result in bit and thus no IPv6 address can be.
    It would either correct without the /64 be or 2002:5D15:b50b:8000/64 divided be the only so the bit length 128 Bit IPv6 address autoconfiguration can be kept.

    Many greetings,

    Stefan Zimmermann

  2. falko says:

    Hi Stefan,

    Thank you for your comment. The specification is exactly the same, how so there is usual in the IPv6 world. It is right, that in the IPv4 world providing so unusual would be and to the part, It is located on the subnet, would reset to zero. In the IPv6 world, it is but common, to specify the full IP address and / nn to specify, How many bits of them belong to the prefix of the subnet. The FritzBox makes it exactly.

    EDIT: With the new firmware versions of the Fritz box is displayed as, how you write.

    Many greetings,
    Robert.

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