Log in to the root account on a DHCP server or BOOTP relay agent on the same subnet as the client.
Use the snoop command to trace network traffic. For example:
snoop -o /tmp/output udp port 67 or udp port 68 |
snoop -o /tmp/output udp port bootps or udp port bootpc |
Boot the client and watch the network messages on the server.
Type:
snoop -i /tmp/output -x 0 -v |