Re: Debian Trixie install SLAAC

Thomas Marcks von Würtemberg <[email protected]> Tue, 12 May 2026 20:26:29 +0200
Newsgroups	gmane.linux.debian.devel.ipv6
Message-ID	<[email protected]>
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Yes, the command

rdisc6 ens18 clearly shows the DNS servers.

Best regards,
Thomas

On 5/12/2026 8:02 PM, Lee wrote:
> On Tue, May 12, 2026 at 7:37 AM Thomas Marcks von Würtemberg wrote:
>
>     
>
>     Hi,
>
>     I'm currently testing ipv6 only networks and services to find
>     things that needs fixing, and when trying to install Debian Trixie
>     using a IPv6 only network with SLAAC configuration the
>     installation fails to detect a network. If i exit to a shell i can
>     ping both the default gateway as well as the two DNS servers that
>     are running in the local /64 network. If I manually set the DNS
>     servers in resolve.conf then I can ping and resolve things on the
>     internet but the installer still does not detect internet and can
>     only install the base OS.
>
>
> Do you have an ipv6 router configured to send RDNSS info?
> https://oneuptime.com/blog/post/2026-03-20-slaac-dns-rdnss/view
>
> You can install radvdump to see the router advertisement info you're 
> getting.
>
> Regards,
> Lee
>
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    <p>Yes, the command</p>
    <p>rdisc6 ens18 clearly shows the DNS servers.</p>
    <p>Best regards,<br>
      Thomas</p>
    <div class="moz-cite-prefix">On 5/12/2026 8:02 PM, Lee wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAD8GWstVRNGEGO=RGROx7hLvC7qm7x74zokg-bngqcBUbJcGbQ@mail.gmail.com">
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          <div dir="ltr" class="gmail_attr">On Tue, May 12, 2026 at
            7:37 AM Thomas Marcks von Würtemberg wrote:<br>
          </div>
          <blockquote class="gmail_quote"
style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
            <div dir="auto">
              <div dir="ltr">
                <p>Hi,</p>
                <p>I'm currently testing ipv6 only networks and services
                  to find things that needs fixing, and when trying to
                  install Debian Trixie using a IPv6 only network with
                  SLAAC configuration the installation fails to detect a
                  network. If i exit to a shell i can ping both the
                  default gateway as well as the two DNS servers that
                  are running in the local /64 network. If I manually
                  set the DNS servers in resolve.conf then I can ping
                  and resolve things on the internet but the installer
                  still does not detect internet and can only install
                  the base OS.</p>
              </div>
            </div>
          </blockquote>
          <div><br>
          </div>
          <div>Do you have an ipv6 router configured to send RDNSS info?</div>
          <div>  <a
href="https://oneuptime.com/blog/post/2026-03-20-slaac-dns-rdnss/view"
              moz-do-not-send="true" class="moz-txt-link-freetext">https://oneuptime.com/blog/post/2026-03-20-slaac-dns-rdnss/view</a></div>
          <div><br>
          </div>
          <div>You can install radvdump to see the router advertisement
            info you're getting.</div>
          <div><br>
          </div>
          <div>Regards,</div>
          <div>Lee</div>
          <br>
        </div>
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