Removing lease after a release
Niall.oReilly at ucd.ie
Fri Dec 7 17:46:41 UTC 2007
On 7 Dec 2007, at 17:28, Jose Borges Ferreira wrote:
> Is it possible to remove all lease information after the server
> receive a DHCPRELEASE.
> The objective is to assign a different IP on the next request.
This is a recurring question.
Please read the list archives.
Please also read RFC 2131, section 1.6:
The following list gives design goals specific to the
the network layer parameters. DHCP must:
[ ... ]
o Retain DHCP client configuration across server reboots, and,
whenever possible, a DHCP client should be assigned the same
configuration parameters despite restarts of the DHCP
Further on, section 2.2 reads:
[ ... ] The basic mechanism for
the dynamic allocation of network addresses is simple: a client
requests the use of an address for some period of time. The
allocation mechanism (the collection of DHCP servers) guarantees not
to reallocate that address within the requested time and attempts to
return the same network address each time the client requests an
Your objective is at cross purposes with the design goals and
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