new program to list dhcpd.leases

Glenn Satchell Glenn.Satchell at uniq.com.au
Mon Jul 28 14:13:33 UTC 2008


Hi Luis

You can look at the source of the script, it gives the url to download,
and the directories to install it it. I think if you run the script it
will tell you:

my @OUIS = ('/usr/share/misc/oui.txt', '/usr/local/etc/oui.txt');
my $OUI_URL = 'http://standards.ieee.org/regauth/oui/oui.txt';
...
print(STDERR "Please download $OUI_URL to /usr/local/etc/oui.txt\n") if not 
defined $oui;

regards,
-glenn
--
Glenn Satchell     mailto:glenn.satchell at uniq.com.au | It's a dog  eat dog
Uniq Advances Pty Ltd         http://www.uniq.com.au | world, and by golly,
PO Box 70 Paddington NSW Australia 2021              | we better make sure
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>Subject: Re: new program to list dhcpd.leases
>From: Luis Fernando Lacayo <lflacayo at cps.k12.il.us>
>To: dhcp-users at isc.org
>Date: Mon, 28 Jul 2008 08:53:06 -0500
>
>Christian, 
>
>Thank you for taking the time to write,  We can we get the manufacturer
>list?
>
>Luis
>
>On Sat, 2008-07-26 at 09:43 +0200, Christian Hammers wrote:
>
>> Hello
>> 
>> As I sometimes want to find out which leases are currently active on my
>> DHCP server or which IP a specific MAC got the last time, I wrote a little
>> script to parse dhcpd.leases. It even prints the oui.txt manufacturer.
>> 
>> Would be nice to see anything like this in the official DHCP distribution.
>> 
>> If someone is interested, the script is public domain and written in pure
>> Perl5. It's available from http://www.lathspell.de/linux/dhcp/
>> 
>> bye,
>> 
>> -christian-
>> 
>> $ dhcp-lease-list --last
>> #      MAC            IP             valid until           manufactorer
>> 00:02:b3:96:4d:4f  192.168.230.56  2007-10-25 14:04:30  Intel Corporation
>> 00:08:02:62:e8:b0  192.168.230.75  2008-02-25 16:24:26  Compaq Computer 
Corporation
>> 00:0b:5d:96:bf:2f  192.168.230.57  2008-01-25 13:07:19  FUJITSU LIMITED
>> 00:0b:82:01:90:ee  192.168.230.71  2007-10-25 07:35:50  Grandstream Networks, 
Inc.
>> 00:0c:29:7b:4d:b9  192.168.230.59  2007-08-23 07:46:55  VMware, Inc.
>> 
>> $ dhcp-lease-list --help
>> Prints active DHCP leases.
>> 
>> Usage: ./dhcp-lease-list [options]
>>  --help      shows this help
>>  --parsable  machine readable output with full dates
>>  --last      prints the last (even if end<now) entry for every MAC
>>  --all       prints all entries i.e. more than one per MAC
>> 
>> 
>
>-- 
>Luis Fernando Lacayo
>Chicago Public Schools
>Senior Unix Administrator
>ITS/ UNIX Infrastructure
>Office: 773-553-3835
>Cell: 773-203-4493



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