What Exactly Causes "uid lease" Messages?

[Todd Snyder]

When I was seeing this, it was because I had a reserved IP within a
previously declared range.

It looks like that might be your problem - you're trying to declare a
lease in the middle of the 228 network, from what I can see.

$0.02.

Todd.

...................................
Todd Snyder
Tools Analyst
Blackberry Operations
Research In Motion Ltd.
519-888-7465 x73176
tsnyder at rim.com 
................................... 

-----Original Message-----
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On
Behalf Of Martin McCormick
Sent: Friday, June 13, 2008 3:22 PM
To: dhcp-users at isc.org
Subject: What Exactly Causes "uid lease" Messages?


	While trouble-shooting a problem which turned out to be caused
by a miscommunication among people, I discovered a large number of
messages in syslog like:

Jun 13 13:40:43 ns dhcpd: uid lease 139.78.228.251 for client
00:1b:38:8d:b0:27 is duplicate on 139.78.228/22 
	Archive searches have turned up other people quoting these
messages, but I haven't found a good explanation as to what is causing
them 

	I thought they were related to the original problem I was
fixing, but I find them on all our campuses. All of them use a dhcp
failover pair and 2 of 3 sites are working fine. The third appears to be
fine but I am not totally satisfied yet.

	We had a case of someone not realizing that both DHCP servers
must see the same traffic so they didn't know that the DHCP helper on
the routers needed to point to both the primary and secondary DHCP
SERVERS.

	Our new failover pair worked for a whole month and a half before
things went so bad that my phone started to ring.
There were loads of "pere holds all free leases" messages as one might
expect.

	All that's left  that looks bad are  these "uid lease"
messages.

Martin McCormick WB5AGZ  Stillwater, OK Systems Engineer OSU Information
Technology Department Network Operations Group


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