[NTLUG:Discuss] dhcp question

Ed Leach ntlug at levelofdetail.com
Fri Mar 7 17:09:06 CST 2008


I have 2 CentOS machines on the same network. I have a dhcp server set
up. I'm restarting networking on a client machine in the same network.
It finds the dhcp server and restarts networking, but it is not being
updated with a new IP address.

On the server I'm getting this error in /var/log/messages:

---
localhost dhcpd: DHCPREQUEST for 192.168.0.103 from 00:11:31:f1:3b:bc
via eth0: unknown lease 192.168.0.103.
---

192.168.0.103 is the IP address of the client that I believe the client
is getting from the router. Why wouldn't the client get it's IP address
from the dhcp server?

Below is my config file, which I have simplified as much as possible but
is still not working.

Also - I'm studying to take the RHCE exam some time and am looking for
some help if there is someone in the North Dallas or Plano area who
could provide advice and/or some kind of mentoring (like testing me).
I'm going through Jang's prep book and every once in a while get tripped
up by something like the above problem.

Thanks,

Ed

------------------------------

ddns-update-style interim;
ignore client-updates;

subnet 192.168.0.0 netmask 255.255.255.0 {

option routers 192.168.0.1;
option subnet-mask 255.255.255.0;

option time-offset -18000; # Eastern Standard Time

range dynamic-bootp 192.168.0.128 192.168.0.254;
default-lease-time 21600;
max-lease-time 43200;
}






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