olemus
seadmele DHCP-serverilt antava IP-aadressi kehtivuse aeg,
mille lõppemisel saab selle aadressi mingi teine seade
=
the amount of time that the DHCP server grants to a network device the permission to use a particular IP address

ülevaateid
https://techgenix.com/dhcp-lease-time-how-to-change-it/

https://homenetworkadmin.com/dhcp-lease-time/

https://www.juniper.net/documentation/en_US/junos/topics/topic-map/dhcp-lease-times.html