On Sat, 9 Mar 2013, Modulok wrote:
List,
I'm running isc-dhcpd to serve leases to clients. Is there a way to expire a
lease before it normally would, i.e. force a client to re-negotiate a lease
early? Perhaps some shell command akin to the following (which would be nice,
but obviously doesn't work)::
dhcpd --revoke 192.168.1.24
I am pretty sure there is no message the dhcp server can send to a client
to request it give up its IP address unless the client has asked for an
address or renewal. dhcpd is a server, it doesn't initiate commands. I
expect that if you modified the entry in the dhcpd.conf file and
restarted dhcpd that the client would be assigned (and use) a new address
the next time it tried to renew (which is typically when half the lease
has been used up).
My view tends to be confirmed here -
http://www.cites.illinois.edu/ipam/leases.html
daniel feenberg
How do you revoke a client's lease prematurely?
Thanks.
-Modulok-
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