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Hi,</div>
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My experience is that you have to use different ports indeed.</div>
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Cheers,
<div>Veronique</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Kea-users <kea-users-bounces@lists.isc.org> on behalf of Darren Ankney <darren.ankney@gmail.com><br>
<b>Sent:</b> Tuesday, September 26, 2023 11:43 AM<br>
<b>To:</b> kea-users@lists.isc.org <kea-users@lists.isc.org><br>
<b>Subject:</b> Re: [Kea-users] ARM port suggestions for HA+MT mode when Kea is serving both V4 and V6</font>
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<div class="PlainText">Hi Kevin,<br>
<br>
One might assume that it would be best for the v4 examples to use v4<br>
addresses and the v6 examples to use v6 addresses regardless of port.<br>
Looking through the ARM, I only found one example that was for Dhcp6.<br>
However, this example did not feature any listener addresses. It was<br>
used to illustrate a specific setting of "parked-packet-limit"<br>
(<a href="https://kea.readthedocs.io/en/kea-2.4.0/arm/hooks.html#parked-packet-limit">https://kea.readthedocs.io/en/kea-2.4.0/arm/hooks.html#parked-packet-limit</a>).<br>
I didn't re-read the entire HA section. Perhaps it mentions the need<br>
to use different ports or addresses between v4 and v6 (and control<br>
agent)?<br>
<br>
Thank you,<br>
<br>
Darren Ankney<br>
<br>
On Mon, Sep 25, 2023 at 5:16 PM Kevin P. Fleming<br>
<lists.kea-users@kevin.km6g.us> wrote:<br>
><br>
> 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.<br>
><br>
> 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.<br>
><br>
> 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.<br>
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