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DHCP Lease Renewal and Rebinding Processes (Page 3 of 3) The Purpose of the Two-Step Rebinding/Renewal Process One valid question is: why bother with a two-step process, rebinding and renewal? The reason is that this provides the best blend of efficiency and flexibility. We first try to contact the server that granted the lease using a unicast request, to avoid taking up the time of other DHCP servers and disrupting the network as a whole with broadcast traffic. Usually this will work, because DHCP servers don't change that often and are usually left on continuously. If that fails, we then fall back on the broadcast, giving other servers a chance to take over the clients existing lease.
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