[Kea-users] KEA 1.1.0 vs. isc-dhcp-server 4.3.3

[SoupNazi izaNpuoS]

Just a shot in the dark without seeing your configuration or anything, but
when I had that problem (admittedly it was DHCPv6) Kea was allowing me to
set impossible lease length values (max lease length or so greater than
valid lease length).  There is a rather long thread about it in the list
here - was in November 2016.  If you have different values set for your
lease lengths - try setting them all the same and see if that helps.

On Wed, Dec 7, 2016 at 10:04 AM, Ralf Hildebrandt <
Ralf.Hildebrandt at charite.de> wrote:

> We're trying to replace a working installation of isc-dhcp-server
> 4.3.3 with KEA 1.1.0 on the same box.
>
> * isc-dhcp hands out IP addresses AND the client accepts them - all is
>   well
>
> * KEA on the other hand does hand out IP addresses:
>
> 2016-12-07 15:59:02.562 INFO  [kea-dhcp4.leases/35075] DHCP4_LEASE_ADVERT
> [hwtype=1 40:6c:8f:52:7d:60], cid=[01:40:6c:8f:52:7d:60], tid=0x1194bc8e:
> lease 10.31.192.5 will be advertised
> 2016-12-07 15:59:18.596 INFO  [kea-dhcp4.leases/35075] DHCP4_LEASE_ADVERT
> [hwtype=1 40:6c:8f:52:7d:60], cid=[01:40:6c:8f:52:7d:60], tid=0x1194bc8f:
> lease 10.31.192.6 will be advertised
> 2016-12-07 15:59:34.627 INFO  [kea-dhcp4.leases/35075] DHCP4_LEASE_ADVERT
> [hwtype=1 40:6c:8f:52:7d:60], cid=[01:40:6c:8f:52:7d:60], tid=0x1194bc90:
> lease 10.31.192.7 will be advertised
> 2016-12-07 15:59:50.659 INFO  [kea-dhcp4.leases/35075] DHCP4_LEASE_ADVERT
> [hwtype=1 40:6c:8f:52:7d:60], cid=[01:40:6c:8f:52:7d:60], tid=0x1194bc91:
> lease 10.31.192.8 will be advertised
>
>   and these DHCPOFFERS arrive at the client. But then the client
>   doesn't seem to accept them at all. It just keeps asking over and over
>   again.
>
> On the same box, we basically shut down KEA, start up ISC-DHCPD and
> vice versa. We're currently using wireshark to record the traffic, but
> in the meantime: anbody got an idea what might be wrong?
>
> --
> Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
> ralf.hildebrandt at charite.de        Campus Benjamin Franklin
> http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
> Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155
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