Thanks, @Werner for your additions!

The determination of whether your Anschluss IPv6 is served with 6rd or with the new IPv6 native with dual stack is not made on the router, but in the Swisscom backend.

Logically speaking, the system treats this as a contract attribute that cannot be influenced by the user themselves.

Really!? Well then I’ll really have to think about changing providers if the router requirement for the latest IP technology were reintroduced.

😕

Have you ever tried to have your Anschluss converted to dual stack via the hotline?

If there was no knowledge about it, perhaps at least contact with the second level could be made.

Well, that would also be a sign of poverty that I still have to call the hotline to check the config. This could be implemented in Kundencenter with little effort:

✅ Enable IPv6

✅ Get a new prefix every x weeks

Maybe I need to think about changing provider.

😕

What I would understand even less. The IPv6 traffic would then slide from the basement to the DSLAM to the “headquarters” and only then into the “foreign” network? (At least that’s how I imagine it…)

🙄

By the way, I currently use dual stack with prefix delegation and get a 58 prefix from an IB3 for my cascaded internal network, which also works very well.

Unlike you, I don’t want to replace the provider CPE at all, because Swisscom should take care of the proprietary technology changes from VDSL2 to g.Fast to XGS-PON and then to something else in the future…

I can understand this argument. But this is exactly where I see significantly more problems than benefits. SIP forwarding in particular was hair-raising back then. Ok, it worked, but subjectively I always had the feeling that I was traveling with a mess.

😉

That’s why I would first like to take the step to a proper dual stack and only then plan for a possible change of media.

How did you get the /58 prefix? I thought retail customers would only get a /60? Did you also call the hotline or the 2nd level!?

😜

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@andiroid

I didn’t do anything special about the prefix length, maybe Swisscom was just more generous with it.

Currently my IB3 receives a 56 prefix from the backbone when prefix delegation is switched on in the dual stack and when I then activate IPv6 native in my cascaded Asus Merlin network, I recognize a DHCPv6 bind to a 58 prefix in the Merlin log.

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Hobby-Nerd ohne wirtschaftliche Abhängigkeiten zur Swisscom

    Werner

    If you have the Fritzbox and are still with this “ISP”, you should probably try it.

    Ultimately, I can’t say how the backend decides. But the Fritzbox can do it natively and if you had it directly on Anschluss, it would be a non-static /56 prefix.

    So something like this (whether rapid commit is needed? try it out)ipv6.jpg

    What Werner says is another story, a topic of its own. This is the prefix delegation in the Internet Box.

    It would be important to know what you can delegate.

    Previous firmware states that a /60 is delegated. In the thread linked to OP it is said that you only get a /62. The same people say here that you get a /58.

    Ok, sounds really Swisscom 😄…

    What can you get from the PD behind the Internet Box?

    /58, /60 or /62?

    These are such small differences as 64/64s, only 16/64s or even just 4/64s that could be made.

    Conversely, this also applies to the possible number of routers (-1).

    As I said, that would be a separate topic. Maybe once you have agreed on what to do 😉

    Show original language (German)

      During normal working hours, Sam initially only arranges contact with the 1st level in the chat. Only if he doesn’t get any further does he suggest that a specialist call you back. Outside of the helpdesk’s normal working hours, Sam sends a link to a support form.

      If you don’t have a Simply Digital option, you can also call 1st level support and persist and request 2nd level.

      In both cases it will be relatively difficult to get to someone who actually knows the problem and knows what IPv6 actually means.

      Show original language (German)
      6 months later

      So I’m continuing this thread here. Thanks @Tux0ne for the tip. I didn’t see it again until later and of course I didn’t remember the discussion from spring.

      🤪

      Then it would of course be important to mention how you want to operate the FRITZ!Box. Directly on the WAN or via PD on the Internet Büx.

      The Fritzbox in question is connected directly to the WAN, no IB in between. I tried to implement your note. But I’m no longer sure whether this is correct for the direct Anschluss on the WAN.

      As already described in the wrong thread, I get it with every attempt Event monitor of the FB the error message: Internet connection IPv6 could not be established: No response from the DHCPv6 server (SOL).

      @MichelB: If you have relevant information like the @Tux0ne [here](https://community.swisscom.ch/t5/Router-Hardware/Migration-zu-Native- IPv6-Dualstack-completed/m-p/738839#M42287) requested would be available would you please place them here or somewhere else? Thank you!

      🙋‍♂️

      Show original language (German)

      Take a screenshot of the settings you can make on the Fritzbox.
      The screenshot with the setting above is wrong when I read Fritzbox instructions.
      The IPv6 setting should be set to native IPv4 even though you are actually using native IPv6 🙂

      The Germans, with their ISPs that are too big, are using DS Lite. And if it is set to native IPv6, dual stack operation with DS Lite is tried…

      And what would also be important is to replace the WAN interface each time. I think this can be done in the Fritzbox with a reboot.

      Show original language (German)

        Tux0ne Thanks! Here are my current settings:

        andiroid_0-1670689616255.png

        I tried different variants with the LAN prefix without success. I didn’t restart because the event viewer showed a new error message about the unreachable DHCPv6 (“No response from DHCPv6 server (SOL)”) with every config change. But I’ll just try that…

        …but there was no change either. 😕

        Show original language (German)

          @Tux0ne wrote:

          Try using the init7 setting for the IPv6 tab, just use native IPv4.

          🌈🐰7️⃣

          @Tux0ne: Thanks for the tip. Didn’t do anything. 😕 But I can’t set everything on my “old” 7490. VLAN can’t do that. Don’t think that matters, do you?

          The error messages in Event Viewer are still:

          “DHCPv6 error with error reason 8 (UnspecFail)”

          and

          “Internet connection IPv6 could not be established: No response from DHCPv6 server (SOL)”

          @MichelB: No news from the insiders? 😉

          Show original language (German)

          @andiroid wrote:

          @Tux0ne wrote:

          Try using the init7 setting regarding the IPv6 tab, just use native IPv4.

          🌈🐰7️⃣

          @Tux0ne: Thanks for the tip. Didn’t do anything. 😕 But I can’t set everything on my “old” 7490. VLAN can’t do that. Don’t think that matters, do you?

          The error messages in the event viewer are still:

          “DHCPv6 error with error reason 8 (UnspecFail)”

          and

          “Internet connection IPv6 could not be established: No response from DHCPv6 server (SOL)”

          @MichelB: No news from the insiders? 😉

          Fritzbox = help yourself

          Show original language (German)

          @5018 wrote:
          Fritzbox = help yourself

          Thank you for this extremely valuable contribution! <Irony off> Next time leave it on your keyboard. If I could help myself, I wouldn’t ask for help here.

          😶

          Show original language (German)

          @andiroid In the init7 instructions, just pay attention to the setting on the IPv6 tab! In this case, the others are init7 specific and are not suitable for the Swisscom Anschluss (in this case they use PPPoE over BBCS and therefore VLAN ID 11 for fiber optics…)

          Did you choose anything related to Swisscom when selecting your ISP? For example, I can imagine that a parameter has already been set that is now somehow preventing it. AVM should check that. I assume they will do the same if you tell them

          I don’t have a Fritzbox or Swisscom Anschluss to test this myself.

          Show original language (German)

          @Tux0ne wrote:

          Those affected are welcome to contact our support: avm.de/service/support

          Are you sure you don’t want a referral code too? 😉

          @Tux0ne: Thanks, I did that without a referral code. 😉 I generated the support data for the Büxe for the request. The information in there already suggests that I won’t get a prefix. Everything is somehow logical if the box does not receive a DHCPv6 server…:

          0: IPv6: native (none)
          0: IPv6: connecting
          0: IPv6: no address
          0: IPv6: no prefix (0)
          0: IPv6: mtu 1500
          0: IPv6: error 4/0×2/8 2022-12-12 21:43:55 UnspecFail (DHCPv6/unknown)
          0: IPv4: native
          0: IPv4: connected since 2022-12-12 21:43:55 (setup time 0 secs) (connect cnt 3)
          0: IPv4: disconnect prevention disabled
          0: IPv4: ip ww.xx.yy.zz mask 255.255.252.0 gw ww.xx.yy.zz dhcp mtu 1500
          0: IPv4: masqaddr ww.xx.yy.zz
          0: IPv4: dns 195.186.4.162 195.186.1.162

          Where ww.xx.yy.zz is my WAN IP. Let’s see what the Berliners will answer. Keep you posted.

          🙋‍♂️

          Show original language (German)

          @andiroid You probably didn’t understand the referral code. Thomas tries to reduce his monthly bill at Init7 by handing out referral codes for switching there. 😉 Of course he has to do something more subtle in the Swisscom forum.

          Otherwise: [https://avm.de/service/wissenskatalog/dok/FRITZ-Box-7490/573\_IPv6-in-FRITZ-Box-einrichten/](https://avm.de/service/wissensdatendaten/dok /FRITZ-Box-7490/573_IPv6-in-FRITZ-Box-setup/)

          However, I fear that the instructions are rather inadequate.

          Show original language (German)