IPv6 active while turned OFF ?!

Discussion in 'macOS' started by rmpel, Sep 24, 2011.

  1. rmpel macrumors newbie

    Sep 6, 2009
    Hi there

    I have one iMac 10.6.8, Airport connected, IPv6 off in settings.
    Then there is one Airport Extreme 4th-gen, IPv6 set to Link Local

    I can visit www.ipv6.apple.com (i don't mind that I can, but I shouldn't be able to)
    Worst of all; I can connect to my imac over the internet! using IPv6. It's like putting a big padlock on my door (IPv4) and leave the Window (IPv6) open.

    Anyone got any information how to block IPv6 entirely? and successfully?

    Thanks ever so much
  2. larkost macrumors 6502a

    Oct 13, 2007
    You are not showing what you think you are showing. Go to Terminal.app and run the following command:
    nslookup www.ipv6.apple.com
    You should see a chain of a couple of resolutions winding up with a Akamai server. That server has an IPv4 address, and that is what your computer is connecting to. There may also be an IPv6 address for that server, but DNS is tricky, and has outsmarted you.
  3. rmpel thread starter macrumors newbie

    Sep 6, 2009
    O.k., so using ipv6.apple.com is not a great test for ipv6 connectivity. But.... how can you explain me being able to connect to my machine over ipv6 from over the internet? See screenshot. It really is over IPv6 and I am very sure I do not allow incoming connections.

    Thanks for replying though :)

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