The IPv6 address is thus not simulated 1:1. The leading zero in the IPv6 Address was removed. (Das siebte Bit wird 0 sein, machen Sie daraus eine 1). Hinweis : Für die folgenden Beispiele wird die MAC-Adresse 11:22:33:44:55:66 verwendet. Get-NetIPAddress -AddressFamily IPv6 -InterfaceAlias "Ethernet" -PrefixOrigin Wellknown | Select-Object IPAddressĪs we can see, however, the parts that should be identical (MAC Address and IPv6 Address) are not exact identical. Nehmen Sie die MAC-Adresse und konvertieren Sie das erste Oktett von hexadezimal in binär. Set-NetIPv6Protocol -RandomizeIdentifiers Disabled If you want to change this simply set the RandomizIdentifier to Disabled.
Run Get-NetAdapter to show the ID of your network card. The %2 at the end is the interface number of the network card. The setting is called RandomizeIdentifier and it’s enabled. Get-NetIPConfiguration | Select-Object IPv6LinkLocalAddress Here’s an example of a random generated IPv6 Link-Local Address. The lack of FFFE indicates that EUI-64 is not used. The MAC address has no influence on this. The IPv6 address is calculated by using a random value. Windows operating systems don’t use EUI-64. Left and right of FF: FE are the parts of the MAC address of the interface. 'y X XOR 2' means inverting the 2 nd bit from the right The form below does the conversion for you (both ways) Start Link-local address with 'fe80::'. Furthermore 'ff:fe' is inserted and 'fe80::' prepended. The MAC address is split into two parts and then FFFE is inserted in the middle of these two parts. IPv6 Link local address: fe80::xyxx:xxff:fexx:xxxx. Let’s take a look at a Cisco router. The IPv6 address of this router is calculated from the MAC address of the interface. Convert the octet back into hexadecimal from binary. (The seventh bit will be 0, make it a 1). Note: The MAC address 11:22:33:44:55:66 will be used for the following examples.
We can activate the EUI-64 process, but by default Windows uses a random value for generating IPv6 Link-Local Addresses.ĮUI-64 (64-Bit Extended Unique Identifier) Take the MAC address and convert the first octet from hexadecimal into binary. This process is called EUI-64, and the assumption that Windows (Vista and above) use EUI-64 is wrong. If you would like to learn more about a Link Local Address, you can check Link Local Address lesson. Here, we should write an IPv6 address in the range of Link Local addresses. In articles, blogs and forums I often read that Windows forms the IPv6 address from the MAC address. To configure a Link Locak address manually, we use ipv6 address link-local ipv6-address command.