[Kea-users] Fwd: DHCPv4 cannot assign address to clients connected via WDS

Guido 嵬 到 guido.out at aversano.org
Fri Oct 20 12:23:15 UTC 2017


Hello,

I am a new user, and I am trying to configure Kea DHCP4 server on a Debian
system (kea version 1.1.0).
I am not really experienced with DHCP configuration, so I might miss some
basics. Sorry for that in advance.

I have a secondary LAN interconnected with the main LAN via wireless, using
WDS.
The Kea DHCP server is on the main LAN. My problem is that clients on the
secondary (remote) LAN do not get any address from the Kea server.

Kea log files show a sequence of advertised leases for remote lan clients,
but lease is never allocated:

  2017-10-20 12:08:41.911 INFO  [kea-dhcp4.leases/7610] DHCP4_LEASE_ADVERT
[hwtype=1 aa:bb:cc:dd:ee:ff], cid=[no info], tid=0x95d72610: lease
192.168.200.11 will be advertised
  2017-10-20 12:08:56.909 INFO  [kea-dhcp4.leases/7610] DHCP4_LEASE_ADVERT
[hwtype=1 aa:bb:cc:dd:ee:ff], cid=[no info], tid=0x7f86aa3f: lease
192.168.200.12 will be advertised
  2017-10-20 12:08:59.910 INFO  [kea-dhcp4.leases/7610] DHCP4_LEASE_ADVERT
[hwtype=1 aa:bb:cc:dd:ee:ff], cid=[no info], tid=0x4db63062: lease
192.168.200.13 will be advertised
...
...
  2017-10-20 12:09:04.910 INFO  [kea-dhcp4.leases/7610] DHCP4_LEASE_ADVERT
[hwtype=1 aa:bb:cc:dd:ee:ff], cid=[no info], tid=0x3e6ad87b: lease
192.168.200.70 will be advertised

where aa:bb:cc:dd:ee:ff is the mac address of a client on the remote LAN
(fake address, as I removed the real one from the log)

Kea server is configured on a bridge interface (br1)
WDS STA interface is added automatically to the bridge by a hostapd server.
The server works properly with local clients connected to another interface
on the same bridge.

Do you have any idea where the problem could come from?
Note that I don't have any issue if I use the DHCP module of DNSMASQ
instead.
DNSMASQ works and assigns adresses to clients over WDS without any special
configuration.

Thank you very much from your help!

Kind regards
Guido
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