Im using DHCP on one of my networks. It is set with teh default of 1440 and 2880, however Im seeing renew logs every couple of minutes from the same clients.
https://www.dropbox.com/s/khhluoxj11b2863/Screenshot%202016-01-12%2014.43.07.png?dl=0
https://www.dropbox.com/s/rsd1d93dg8u0wyo/Screenshot%202016-01-12%2014.43.25.png?dl=0
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