Where does RUTX08 configure IPv6 ULA addresses?

NETWORKING SOLUTIONS
1

Hi,

being a networking expert with nearly 20 years of experience with running IPv6 networks I appreciate that Teltonika devices seem to use IPv6 by default. However, I would like to see this network configuration.

One of the RUTX08 devices that I manage has decided to choose an IPv6 ULA prefix, configure itself to be a nameserver (most interestingly NOT a router) and to announe that prefix and itself as nameserver. Since it doesn’t know about the site’s split DNS setup, this has broken DNS for the better part of the internal network of that site and some of the system administrators are now even more opposed against iPv6 as they were before: It only causes trouble!

Where in the web interface (and, optionally, in the RMS) would I see that ULA prefix and would be able to disable it? Where would I disable the announcement of the prefix and the DNS service?

Please advise. Thank you.

Greetings, Marc Haber

3

Greetings,

We are currently working on your inquiry and will get back to you as soon as possible.

Best Regards,
Justinas

4

Hi, via WebUI it can be done like so:

You can disable router announcements by disabling whole DHCPv6 server on LAN interface

If you want router to loose ULA address then set IPv6 assignment length to Disabled on LAN interface and restart router

5

Like this?

Screenshot_20251105_090824
Screenshot_20251105_090824846×253 17.7 KB

It is off.

Like this?

Screenshot_20251105_090910
Screenshot_20251105_090910902×357 20.3 KB

So I need to explicity set the assignment to “Disabled” even if “Delegate IPv6 prefixes” is already off?

Greetings, Marc Haber

6
  1. Yes, did it helped with unwanted RAs or it was turned off originally?
  2. In my experience this effects only PD coming from dhcpv6 clients but not ULA