dhcpdecline messages

Hai Tao taoh666 at yahoo.com
Tue Jan 16 20:26:49 UTC 2007


you are right for host statement.
  however, when I ping this ip address, no reply received. how can the client find a conflict while I can not ping it? thanks!
"David W. Hankins" <David_Hankins at isc.org> wrote:
  On Tue, Jan 16, 2007 at 11:29:55AM -0800, Hai Tao wrote:
> Oct 21 00:15:05 localhost dhcpd: DHCPDECLINE of 206.21.74.170 from
> 00:0d:56:ec:49:0a (joyce-sung2lpwf) via eth0: not found
> 
> is there any idea of why?

Clients emit a DHCPDECLINE when the address they REQUESTed and
ACKed was found to already be in use by a different client on
the same network. Usually this is done via an ARP probe.

'not found' is found to be in these log lines when the address
they're complaining about is not in the persistent lease database.

But this address was clearly offered to the client.

So I conclude that you have a host {} record for this client, and
have provided a fixed-address of 206.21.74.170. These 'static
leases' do not reside in the persistent lease database.


You could give the client a different address, or find out what
client is 'squatting' on this client's allocated address and
apply blunt force trauma until the problem solves itself.

-- 
David W. Hankins "If you don't do it right the first time,
Software Engineer you'll just have to do it again."
Internet Systems Consortium, Inc. -- Jack T. Hankins




             
  Hai Tao










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