Strange behaviour from dhcp server

Simon Hobson dhcp1 at
Fri Sep 7 18:44:15 UTC 2012

Tobias Szyndler wrote:

>Does anyone have an idea where we could check more to narrow down 
>this problem?

You could start by posting your config file - dhcpd.conf

>Furthermore I wonder if there is a config setting in dhcpd.conf to 
>force the dhcp to only give one IP per mac address. Sometimes we 
>have the case that the same MAC seems to receive more than one IP.

It will do that if the client makes requests with different 
Client-IDs. The Client-ID is the primary key in the database and the 
MAC address is only used if no Client-ID is provided. So if the 
client changes it's Client-ID, or changes between providing and not 
providing one, then to the server is is a different client and will 
get a different address.

Simon Hobson

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