[Kea-users] Overlapping/duplicate subnets

S. M. Hossein Hamidi hossein.hamidi at gmail.com
Tue Feb 7 15:42:12 UTC 2017


Hi,

That's very true. While it seems a basic feature to me, surprisingly, I
don't know any DHCP server in the world which meet this requirement.

Regards,

On Tue, Feb 7, 2017 at 3:52 PM, Jan Schermer <jan at schermer.cz> wrote:

> I'll chime in - this is a must for any "cloud" or SDN use (OpenStack etc.).
> Absolutely worth implementing.
>
> Jan
>
>
> On 7 Feb 2017, at 15:48, Sutherland, Rob <RSutherland at BroadViewNet.com>
> wrote:
>
> I am in the same situation (i.e. must support overlapping/duplicate IP
> address ranges). We currently use a heavily-modified ISC DHCP daemon but
> would love to move to a solution that is
>
> 1)      backed by a database and
> 2)      not so heavily customized.
>
> Cheers,
>
> Rob
>
>
> *From:* Kea-users [mailto:kea-users-bounces at lists.isc.org
> <kea-users-bounces at lists.isc.org>] *On Behalf Of *S. M. Hossein Hamidi
> *Sent:* Friday, February 03, 2017 12:03 PM
> *To:* kea-users
> *Subject:* [Kea-users] Overlapping/duplicate subnets [faked-from]
>
> Hi all,
>
> My mind is busy with a DHCP scenario that I couldn't end up with a
> configuration to support that. I am asking here to make sure it is not an
> oversight.
>
> Suppose that we have several subnets which are behind a NAT device which
> additionally acts as a DHCP relay agent. I know that using DHCP relay agent
> information option, I can distinguish between different subnets. However,
> the additional constraint is to use duplicate or overlapping subnets
> instead of different subnets. Since, the traffic comes from each segment
> goes through NAT, it wouldn't be any problem to use duplicate IP addresses,
> knowing that each segment has its own autonomy.
>
> As far as I know, the lease database use IP address as primary key. So, it
> seems duplicate IP addresses are not allowed.
>
> Is there any workaround except running several instances of Kea to serve
> such a topology?
>
> Regards,
> _______________________________________________
> Kea-users mailing list
> Kea-users at lists.isc.org
> 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
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/kea-users/attachments/20170207/10a56dc6/attachment.htm>


More information about the Kea-users mailing list