Windows Vista Forums

Wrong autoconfigured IPv6 address

  1. #1


    Felipe Alfaro Solana Guest

    Wrong autoconfigured IPv6 address

    This question is related to Windows 7, so I'm not sure if it applies to
    Windows Vista.

    I have an OpenBSD 4.4-current box at home that is configured to send
    IPv6 Router Advertisements (by means of the rtadvd daemon). My Mac OS X
    and Linux machines configure their IPv6 addresses using the prefix from
    the Router Advertisements plus part of their NIC MAC addresses. However,
    Windows 7 seems not to use the NIC MAC address but some bits I can't
    figure out where they come from. My machine has three IPv6 adddresses:
    link-local, IPv6 and Temporary IPv6. Looks like Windows 7 is using IPv6
    privacy extensions, but what's even more surprising is that even the
    link-local IPv6 address does not contain any single bit from the NIC MAC
    address (it ends in :1494 where as the NIC MAC address ends in AA-E1).
    In the NIC properties, inside the IPv6 settings, I can't seem to find
    anything relevant. Another data point, which might be meaningless, is
    that the NIC is a Wireless LAN adapter: Atheros AR5008X (yes, you
    guessed right, this machine is a MacBook Pro).

    Are you familiar with IPv6 autoconfiguration in Windows 7 (or Windows
    Vista)?

    Thanks in advance.

      My System SpecsSystem Spec

  2. #2


    Sooner Al [MVP] Guest

    Re: Wrong autoconfigured IPv6 address

    "Felipe Alfaro Solana" <felipe_alfaro@xxxxxx> wrote in message
    news:e9l%23tOBdJHA.5904@xxxxxx

    > This question is related to Windows 7, so I'm not sure if it applies
    > to Windows Vista.
    >
    You need to post Windows 7 questions to the Windows 7 Beta Online
    Forums...

    http://social.technet.microsoft.com/...egory/w7itpro/

    --

    Al Jarvi (MS-MVP Windows - Desktop User Experience)

    Please post *ALL* questions and replies to the news group for the
    mutual benefit of all of us...
    The MS-MVP Program - http://mvp.support.microsoft.com
    This posting is provided "AS IS" with no warranties, and confers no
    rights...
    How to ask a question
    http://support.microsoft.com/KB/555375


      My System SpecsSystem Spec

Wrong autoconfigured IPv6 address

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