[Kea-users] DHCPv6 DUID-LL matching

[Cristina Bulfon]

The following configuration works for my environment, using Mac address for ipv6 reservations

- on the dhcp client side after installing the node, I force the use of the DUID-LL and the setting dhcp6.method = auto (if I remember correctly it is used to set the routing correctly)
       nmcli connection modify <iface> ipv6.dhcp-duid ll
       nmcli connection modify <iface> ipv6.method auto
 
- on the kea dhcp server  with the following option I can used the Mac address for ipv6 reservations

     - "mac-sources": [ "client-link-addr-option", "ipv6-link-local”] —> I’ve configured relay agent on router so ipv6-link-local should not be used 

- "host-reservation-identifiers": ["hw-address”]

- example of host reservations

    {
   "hostname": “<fqdn>",
   "hw-address": “00:00:00:00:00:00",
   "ip-addresses": [“abcd:abcd::7"] 
} ,

   Hope this help,

Cristina 

> On 29 Nov 2024, at 13:06, Marek Greško via Kea-users <kea-users at lists.isc.org> wrote:
> 
> 
> Nope, solution is to not place reservations into leases. The reservations in leases create more problems then it solves. There are many change requests for it from multiple people. This was just step sidewards.
> 
> Marek
> 
> 
> 
> 
> Sent with Proton Mail secure email.
> 
> On Friday, November 29th, 2024 at 11:46, Francis Dupont <fdupont at isc.org> wrote:
> 
>> Véronique is right: the solution is to use flex-id with replace-client-id
>> set to true.
>> 
>> Regards
>> 
>> Francis Dupont fdupont at isc.org
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