The ADHCP client notification binary adhcp_notify_simple is called by adhcp_client(8) on DHCP status changes (if specified on the command line using the -e option).
adhcp_notify_simple creates the lease file /tmp/dhcp.lease containing the DHCP configuration as key, value pairs.
Reason of the status update.
Interface on which adhcp_client is running.
Path to DHCP lease file.
The ADHCP website can be found at https://www.codelabs.ch/adhcp/.