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Odd DHCP issue

Posted: February 14th, 2009 | Author: | Filed under: howto, idiots, linux | Tags: , , , , | No Comments »

Let’s assume you have a network with a dhcp service (on linux) distributing IPs for your computers.
Suddenly, nobody gets IP from the DHCP.
Probably, you’ll check logs to see whats wrong.
In the logs everything looks normal, except the high number of requests from every computer using dhcp in the network.

dhcpd: DHCPDISCOVER from 00:00:00:00:00:00 via eth0
dhcpd: DHCPOFFER on 192.168.x.x to 00:00:00:00:00:00 via eth0
dhcpd: DHCPREQUEST
dhcpd: DHCPACK

Static IP computers are working as expected.

The next thing you should do is to start wireshark or tcpdump (or any similar application).
Check for errors and odd messages.
In my case it was a second dhcpd service running for the same subnet on another server.

🙂



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