Once upon a time, ToddAndMargo via users users@lists.fedoraproject.org said:
The information in /var/lib/dhclient/dhclient.leases:
File contents are not what people usually mean by "functionality". If you are using NetworkManager and looking for the DHCP information, that's provided by NetworkManager - for example "nmcli con show br0" (which is a lot more complete about the DHCP request and reply).