Maximum possible value for *-lease-time?

Simon Hobson dhcp1 at
Fri Jan 11 15:59:05 UTC 2008

David W. Hankins wrote:

>The DHCP protocol wire transfers relative timestamps, not absolute
>timestamps, because it's too hard to synchronize clocks.  So 2038 only
>comes into play if the system(s) scheduling timeouts (on either side
>of the DHCP protocol) have a 32-bit time_t.
>Ostensibly, between now and 2038 your OS will upgrade past that.

So it's probably best not to go beyond 29 year leases at the moment then ;-)

While I doubt there are that many uses for leases measure din years, 
I did come across a device that wouldn't accept a lease shorter than 
2 years !

More information about the dhcp-users mailing list