Wrong Ip address to the client

[Alex Bligh]

--On 24 March 2012 11:38:33 +0100 Ruzsinszky Attila 
<ruzsinszky.attila at gmail.com> wrote:

>> Perhaps you have something else configured as a dhcp server on your
>> LAN.
> No, I haven't got.

In which case either your client(s) are not receiving the reply
packets at all and incorrectly using the previous lease, or you
have two clients behaving very oddly indeed.

I suggest you run tcpdump on the Ubuntu client that is doing this.

-- 
Alex Bligh