Hi Django, I'm not entirely certain how to solve your dilemma. I can say that I've seen misconfigured RA result in both SLAAC and static (the administrator did not desire SLAAC). So you could probably statically assign the ULA and obtain the GUA via DHCPv6 with no change to your RA. To trick your local computer into soliciting both addresses via DHCPv6 (and to trick your server into selecting from multiple subnets) you would probably need to add another interface, but I think that probably defeats the goal you are trying to achieve (stable addressing on the LAN) by adding essentially a second LAN. To be fair, this wouldn't be any easier in DHCPv4 / IPv4 as your DHCP server would not be any more willing to assign addresses from multiple subnets to the same interface (nor would your client be any more willing to DISCOVER for both).
I hope this helped, but doubt that it was terribly helpful. Thank you, Darren Ankney On Mon, Jul 8, 2024 at 1:04 PM Bastard Operator from Hell aka Django <dja...@nausch.org> wrote: > > HI! > > I'm really starting to despair of my sanity! Either I'm really getting > too old for all this shit or those who have put their heads together > with the RDCs around SLAAC and DHCPv6 have really consumed the most > blatant dope! > > Why? > > Okay, I'll tell you. I've already had to find out the hard way that a > client doesn't send two DHCPDISCOVER messages for announced GUA and ULA > prefixes. > > As an alternative, I then thought to myself, well, then let the radvd in > its router announce advertisement messages for the GUA prefix SLAAC and > refer to a DHCPv6 for the assignment of the ULA, which then assigns > these statically on the basis of the DUID. Well, that's the theory and > my reasoning, BUT: For DHCP, the AdvManagedFlag must be set to "on" and > AdvAutonomouse to "off". For SLAAC, both values are the other way > around. But now I have the problem that the parameter AdvManagedFlag in > radvd.conf is defined for the interface and AdvAutonomous for the > prefix, and defining the same interface eth1 twice fails with a radvd -c > with an error. :/ > > Now the question arises, how can I configure the radvd so that the GUA > can be assigned via SLAAC but the ULA statically via DHCPv6? Or how on > earth do I get static ULA from kea-dhcp6 and GUAs via SLAAC? It can't be > impossible what I'm trying to do. > > I'm at my wit's end and I'm enjoying the best Scottish whiskey or > Mexican tequila ... > > > > Best regards... > -- > Django (Bastard Operator from Hell [BOfH]) > aka Michael Nausch > Gänsbrunnenweg 6 > 85652 Pliening > > Tel.: 08121 883176 > Fax.: 08121 883179 > Mail: <mailto:dja...@nausch.org> > > https://wetterstation-pliening.info > https://ebersberger-liedersammlung.de > https://dokuwiki.nausch.org > -- > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. > > Kea-users mailing list > Kea-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/kea-users -- ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. Kea-users mailing list Kea-users@lists.isc.org https://lists.isc.org/mailman/listinfo/kea-users
