[Kea-users] kea dhcp server does not respond to dhcpDISCOVER

[Darren Ankney]

Hi Khebchi,

all 255 is broadcast.  That will be the response source and
destination, I believe, to a local DISCOVER.  If some other behavior
is desired, then the traffic must be relayed using a relay agent so
that it is no longer broadcast.  The relay agent is designed to
forward broadcast traffic from a non-local network to a DHCP server as
unicast, receive the response as unicast and broadcast that to the
local client.  See RFC 2131
(https://www.rfc-editor.org/rfc/rfc2131.html) and 2132
(https://www.rfc-editor.org/rfc/rfc2132.html) for (most) details.

Thank you,

Darren Ankney

On Thu, Jul 27, 2023 at 7:51 PM Khebchi Abdallah <a.khebchi at esi-sba.dz> wrote:
>
> i am using kea dhcp to listen to a dummy interface with broadcast IP : 10.11.255.255 when i send a DHCP DISCOVER to it the kea dhcp server does not respond , i saw that it only respond on the 255.255.255.255 addr
> can anyone help me figure out this issue?
> thanks
> Khebchi abdallah networking student
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