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

[Ralf Hildebrandt]

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