Open the topology Examples/DHCP/DHCP.imn and you should see this:
Execute the experiment and position yourself in the Examples/DHCP/ folder. Run the command:
Right click on the pc3 node and use Wireshark to listen to the eth0 interface.
Double click on the pc3 node and run:
# dhclient eth0
To check if an IP address is assigned to the pc3 node, run:
# ifconfig eth0
Stop the Wireshark capturing and locate the DHCP packets generated by the script.