[Kea-users] DHCP Offer Decline to UEFI Configured host

[Thomas Andersen]

Hi Gokul,

Are you on KEA 1.0? We were and had the same problem.
In my case, the issue lied in KEA 1.0 was responding with unicast no matter what the client requested.

UEFI is a lot more strict in terms to getting reply as requested, otherwise it will ignore the DHCP packets. It is requesting broadcast, but get a unicast response, which from UEFI point of view is malformed.

Updating to KEA 1.3 fixed the issue for us. We then wrote a hook that can enforce unicast replies on certain subnets.

Br,
Thomas

From: Kea-users <kea-users-bounces at lists.isc.org> on behalf of Gokulakrishnan Gopalakrishnan <ggopalakrishnan at salesforce.com>
Date: Monday, 16 April 2018 at 10.50
To: "kea-users at lists.isc.org" <kea-users at lists.isc.org>
Cc: Srikanth Boddepalli <sboddepalli at salesforce.com>
Subject: [Kea-users] DHCP Offer Decline to UEFI Configured host

Currently, we are using Kea to assign IPs to my server and it works well. Now, we have configured UEFI on DELL Server and after that config, DHCP Offer is getting declined by the server. When I queried online, there was a change mentioned to change the boot filename and even that didn't help us in accepting DHCP Offer.
We just shifted back to dhcpd and things started working with UEFI config. Is there any known issue with UEFI-Kea? Do I need to change any config/DHCPOption to assign IP for DELL Server with UEFI config?

Thanks in advance,
Gokul
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