Wrong Ip address to the client

[sthaug at nethelp.no]

> Mar 24 10:46:57 wspc7 dhcpd: DHCPDISCOVER from 60:d8:19:4d:3d:5e via eth0
> Mar 24 10:46:57 wspc7 dhcpd: DHCPOFFER on 192.168.52.100 to
> 60:d8:19:4d:3d:5e via eth0
> Mar 24 10:46:57 wspc7 dhcpd: DHCPREQUEST for 192.168.52.187
> (192.168.52.140) from 60:d8:19:4d:3d:5e via eth0: lease 192.168.52.187
> unavailable.
> Mar 24 10:46:57 wspc7 dhcpd: DHCPNAK on 192.168.52.187 to
> 60:d8:19:4d:3d:5e via eth0
> 
> The printer is a HP LaserJet and got .187 not the fixed address .100.
> 
> I found this problem with an Ubuntu 10.04 client. The server sent
> DHCPNAK and the client ignored it.

Why do you think this is a DHCP server problem? If the client ignores
the DHCPNAK, there is nothing the server can do about that.

(In *my world*, clients are connected via a BRAS which snoops on the
DHCP transactions, and only permits DHCPACK'ed IP addresses to reach
the Internet. This is obviously not a universal solution...)

Steinar Haug, Nethelp consulting, sthaug at nethelp.no