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List:       ipcop-user
Subject:    Re: [IPCop-user] Remove old l DHCP leases?
From:       "Bryan Jarvis" <bjarvis () LaughingJ ! com>
Date:       2008-05-19 17:44:43
Message-ID: 00c101c8b9d8$05d4dd50$cd01a8c0 () tech ! metronews ! local
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Thank you, Kerry -

I think that worked, at least it cleared the list
of expired leases.  Fingers crossed!

Bryan

-----Original Message-----
From: Kerry Erb [mailto:kerry@kerryerb.com] 
Sent: Monday, May 19, 2008 11:34
To: admin@different-perspectives.com
Cc: bjarvis@LaughingJ.com; ipcop-user@lists.sourceforge.net
Subject: Re: [IPCop-user] Remove old l DHCP leases?

On Mon, May 19, 2008 10:06, Administrator said:
> | Yes, they are outside the range, as I see it:
> |
> | My lower Dynamic range:  192.168.1.10
> | upper Dynamic range:	 192.168.1.60
> | Base for fixed lease:    192.168.1.70
> |
> | I set my users up as dhcp clients, and then at my IPCop I
> | moved those I needed to be static to the static range by
> | using the IPCop interface.
> |
> | They did show up in the fixed lease area after an ipconfig
> | /release and ipconfig /renew.
> |
> | However, I continually get the error messages about the duplicates.
>
> I keep on having similar problems with one of the devices I have (a dell
> printer) - it "remembers" the last DHCP address it was given and keep on
> asking for it.  The DHCP server keeps agreeing to give it out, despite
> there
> being a fixed lease defined.  Clearing the lease from the leases file
> makes
> no difference.
>
> This in my mind, is a bug in dhcpd.
>
> The only way I found to clear it was to clear the dhcp leases file and the
> previous version, restart IPCop, and restart the printer while IPCop is
> starting up.  A real pain.
>
> Changing the MAC address in the stored dynamic lease may fix it.  You
> could
> try this.
>
> David
>

I resolved similar issues by setting the DHCP allowable range tightly, say
192.168.1.1-192.168.1.2. After hitting the save button, all of the
previous registered dynamic leases get cleared from the system.  Then go
back and change back to the actual range again and save.  Usually this
clears things for me and I haven't had to mess with manual command line
changes.

Kerry


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