Constant DHCPREQUEST and DHCPACK between devices and server

Campbell.ColinD at Campbell.ColinD at
Thu Sep 13 07:18:43 UTC 2012


I just upgraded a box from RHEL5.8 (DHCP3.0.5) to RHEL6.3 (DHCP 4.1.1).
The leases file was copied from what used to be the server's partner
(it's still running RHEL5.8).

I now get a constant stream (multiples per second) of
DHCPREQUEST/DHCPACK between the devices still active on the network. 

Anyone know what is happening and how to fix it?

Colin Campbell
Security Specialist
Public Safety Network Management Centre
p: (07) 3008 4851
f: (07) 3008 4799
e: campbell.colind at

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