[Kea-users] Need to have DHCP Relay in order for Kea to work...?

[Sonic]

On Sun, Jul 14, 2024 at 6:27 PM Ubence Quevedo <thatrat at gmail.com> wrote:
<snip>
 Even though I have my Kea configured to advertise on all of the
interfaces [untagged, 11, 12], I can’t seem to get anything to work
unless I have the DHCP Relay service setup on the pfSense device to
redirect all DHCP traffic to the Kea system’s untagged IP address
[192.168.10.3].
>
> I can verify through nmap that udp port 67 is running on all three interfaces.
>
> If I turn off the DHCP Relay service, I was expecting the interfaces to pick up on the DHCP requests from devices on all of these networks.
>
> This doesn’t happen and devices don’t get addresses.  I’ve even watched the logs I’ve split out and nothing is written for the duration that the relay service is turned off.  As soon as I turn it back on, I start seeing traffic again.

If the DHCP server's interface is not on the vlan in question then
something has to forward/relay the UDP requests. In my use cases with
Aruba switches I need to configure an IP help-address (separate from
the multicast configurations). Works find with both ISC-DHCP and Kea.
Unifi must have something similar.

Chris