All DHCP leases obtained from the server are saved in the DHCP_Leases.txt file, which is automatically generated by the program. # DHCP Client Simulator # For the DHCP client simulator mode, assuming there is an active DHCP server in the network, the user can choose to simulate any number of DHCP clients.
When using VirtualBox, the network interface that is connected to the network in GNS3 should be configured with the following setting: Promiscuous Mode - Allow All in the Settings/Network/Adapter menu. First, the script sets the desired network interface to PROMISC mode, so that all traffic will be accepted - this is needed for the client functionality and packet sniffing. The script is written in Python 2.7.3 and runs on Linux systems.