Curious behaviour with expired/abandoned leases not being given out

[perl-list]

I've seen situations where one client can continuously DHCPDECLINE every address that is allocated essentially marking entire pools abandoned.  It goes like this:

DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCPDECLINE

DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCPDECLINE

DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCPDECLINE

over and over and over again at a very rapid pace.  Check your logs for this type of behavior and remove the offending device from the network if found.