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* Peter Humphrey: |
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> $ ping6 vdsl |
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> ping: vdsl: No address associated with hostname |
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The outcome of ping depends on /etc/resolv.conf and /etc/hosts, and even |
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on the OS of the IPv6 nodes involved. Apple devices will be available as |
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somename.local, with "somename" being what the user configured as the |
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device's name in Preferences->Sharing. I can for example ping my iPhone |
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via "ping6 silver.local". |
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> If I add the LAN address of the Bipac to /etc/hosts, ping finds it |
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> okay, but what if the address changes if the Bipac reboots? |
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Your Bipac will have multiple "LAN addresses", or rather addresses that |
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are bound to the LAN-facing network interface. In your example, you were |
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pinging the global scope address 2a02:x which may change over time, |
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unless your provider assigns static networks (mine does not). However, |
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the router should also have at least one link-local address and one |
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unique local address (ULA): |
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Global scope: 2a02:8010:x (may change or may not) |
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Link local: fe80:y (may change with SLAAC privacy extensions) |
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ULA: fd67:z (should be fixed) |
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With my router, the ULA was set up once when I first picked a random ULA |
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prefix, and has remained immutable since then. |
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> I see my mobile phone has acquired an IPv6 address starting with |
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> fe80::40be... and it doesn't look like its MAC address. |
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That's not actually a bad thing. I mentioned SLAAC privacy extensions |
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(RFC 4941) before; [1] offers some explanations. |
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[1] https://www.internetsociety.org/resources/deploy360/2014/privacy-extensions-for-ipv6-slaac/ |
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-Ralph |
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