How can DHCP client get different IP address with same MAC address

Glenn Satchell glenn.satchell at
Wed Apr 14 06:59:56 UTC 2010

On 04/14/10 16:25, Billy Ng wrote:
> Hi All,
> Is that any way to force the dhcp server allocate different IP address
> to client? If the client MAC address record in the lease file, and this
> client will get the same IP address every time.
> Thanks in advise.
> Best Regards,
> Billy

That is the correct behaviour as specified by the RFCs. The only way to 
do this would be to delete the lease entry from dhcpd.leases. But many 
popular dhcp clients also retain knowledge of their last leased IPs and 
ask for the same IP again anyway.

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