[Kea-users] ARM port suggestions for HA+MT mode when Kea is serving both V4 and V6

[Veronique Lefebure]

Hi,
My experience is that you have to use different ports indeed.
Cheers,
Veronique
________________________________
From: Kea-users <kea-users-bounces at lists.isc.org> on behalf of Darren Ankney <darren.ankney at gmail.com>
Sent: Tuesday, September 26, 2023 11:43 AM
To: kea-users at lists.isc.org <kea-users at lists.isc.org>
Subject: Re: [Kea-users] ARM port suggestions for HA+MT mode when Kea is serving both V4 and V6

Hi Kevin,

One might assume that it would be best for the v4 examples to use v4
addresses and the v6 examples to use v6 addresses regardless of port.
Looking through the ARM, I only found one example that was for Dhcp6.
However, this example did not feature any listener addresses.  It was
used to illustrate a specific setting of "parked-packet-limit"
(https://kea.readthedocs.io/en/kea-2.4.0/arm/hooks.html#parked-packet-limit).
I didn't re-read the entire HA section.  Perhaps it mentions the need
to use different ports or addresses between v4 and v6 (and control
agent)?

Thank you,

Darren Ankney

On Mon, Sep 25, 2023 at 5:16 PM Kevin P. Fleming
<lists.kea-users at kevin.km6g.us> wrote:
>
> In the before times, when HA was typically deployed using communication through the Control Agent, the 'url' specified in the HA section of the DHCP4 and DHCP6 configs for any given peer could be the same, because that peer was only running one instance of the Control Agent.
>
> In the new world, with HA+MT in place, each DHCP server needs a separate port (or the same port but on a different address) in order to avoid conflicts. In spite of this, the ARM suggests using port 8001 (to avoid the default of 8000 for the Control Agent), but doesn't address the situation where both DHCP4 and DHCP6 are running on each peer in the HA+MT configuration.
>
> I'm not sure whether it's better to suggest that the V4 and V6 server 'url' parameters contain distinct ports, or contain distinct addresses... but one of those is necessary to avoid conflicts.
> --
> 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/kea-users/attachments/20230926/afe33087/attachment-0001.htm>