[Kea-users] reservation for the same host in several subnets

[Marek Greško]

Hello,

is it a limitation of kea or of the dhcp6 protocol? What is IAID then for? The IAIDs are different.

If I add hwaddress as a key, I suspect it is not real harware address but rather some hw-address part from the DUID so it is the same for all interfaces. Am I right?

So it seems I will have to create new vlan with the same purpose. What I would like to achieve is to have the host to be able to connect using either the cable or wifi. Both have the reservation (different ipv6 address).

Thanks

Marek




Sent with Proton Mail secure email.

On Friday, August 23rd, 2024 at 2:29, Darren Ankney <darren.ankney at gmail.com> wrote:

> Hi Marek,
> 
> I do not think you are going to be able to have two reservations for
> the same DUID in the same subnet or shared-network. You might be able
> to set one for DUID and the other for hw-address if that is available
> to Kea, however.
> 
> Thank you,
> Darren Ankney
> 
> On Thu, Aug 22, 2024 at 8:22 AM Marek Greško via Kea-users
> kea-users at lists.isc.org wrote:
> 
> > Hello,
> > 
> > sorry, probably different problem here:
> > 
> > I just realized, in the second vlan I have another definition for different interface of the host (same DUID, but different IAID). Probably the conflict it this one.
> > 
> > Is it possible to have these two enrties? I would need it.
> > 
> > Thanks
> > 
> > Marek
> > 
> > On Thursday, August 22nd, 2024 at 14:17, Marek Greško via Kea-users kea-users at lists.isc.org wrote:
> > 
> > Hello,
> > 
> > I am running a kea-2.6.1 server. I want one of the hosts to be roaming, i. e. to be able to connect by the network cable to two different vlans by selecting the plug.
> > 
> > I am able to setup it for ipv4, but for ipv6 I get error: failed to add new host using the D
> > UID ...... to the IPv6 subnet id <my id> as this host has already been added. The DUID and IAID is the same as for the same host in different subnet.
> > 
> > I tried to set "early-global-reservations-lookup": false, but it had not help much.
> > 
> > How can I achieve this goal? I would expect reservations table are independent for different subnets.
> > 
> > Thanks
> > 
> > Marek
> > 
> > --
> > 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 at 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 at lists.isc.org
> https://lists.isc.org/mailman/listinfo/kea-users