cannot change ip address in pool (fixed question)

Simon Hobson dhcp1 at
Fri Sep 14 18:02:01 UTC 2012

Jim Pazarena wrote:

>>Your values will mean that for devices which do not request a specific
>>lease time, they will get a lease of 10 minutes duration which they will
>>renew about every 5 minutes. If you have a DHCP failure, then clients
>>will lose their leases and stop working roughly 5 to 10 minutes later.
>I have found many clients (such as d-link routers, and windo$e machines)
>which retain their IP and keep using it long after the lease expires.
>I have even seen where a client device has requested a renewal, been
>issued a DHCPNAK, and they ignore it. And keep going merrily on their
>way using the IP which you want them to surrender.

Yes, there are clients programmed by clueless f***wits who couldn't 
be a***d to find out how a simple protocol is meant to work.

Simon Hobson

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author Gladys Hobson. Novels - poetry - short stories - ideal as
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