Wildly excessive DHCPREQUESTs

Scott Baker bakers at web-ster.com
Tue Feb 19 22:46:39 UTC 2008

David W. Hankins wrote:
> On Tue, Feb 19, 2008 at 04:12:44PM -0600, John Hascall wrote:
>> about 11,000/day.  Does anyone have any idea what might make a
>> box do a DHCPREQUEST/ACK cycle about every five seconds all day,
>> day after day (despite getting a 4 day lease)?
> I've seen something similar with...of all things...Nintendo Wii's.
> When they're suspended but have 'connect24' enabled, they seem to
> reconfirm network attachment with a DHCPREQUEST inbetween brief sleep
> cycles (7-20 minutes).
> My intuition would be to see if the client is having its interface
> state cycled rapidly like that; many clients will attempt a request
> to confirm they haven't changed networks.

We see "broken" routers that re-request DHCP just like you describe. 
For whatever reason, we see to seem this most often with Netgear 
routers. It's certainly not ONLY Netgear though.

Scott Baker - Canby Telcom
RHCE - System Administrator - 503.266.8253

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