[Dnsmasq-discuss] Howto reclaim all dhcp leases after router reboot
Chris Green
cl at isbd.net
Fri Sep 25 15:01:48 BST 2020
On Fri, Sep 25, 2020 at 02:39:04PM +0200, Tuxo wrote:
> Hi Matus,
>
> Thanks for replying so quickly to my request.
>
> On 25.09.20 11:39, Matus UHLAR - fantomas wrote:
>
> >
> > why the need to reclaim them?
> >
>
> Because I like to have a place (file) where I can see what leases have been
> given out, to what IP address and what hostname is currently using them.
>
I've written myself a script to do this for me, independent of what is
doing DHCP.
It produces output like this:-
chris$ lan
16 packets received by filter, 0 packets dropped by kernel
192.168.1.1 2860n xx:xx:xx:xx:xx:xx DrayTek Corp.
192.168.1.3 esprimo xx:xx:xx:xx:xx:xx Fujitsu Technology Solutions GmbH
192.168.1.4 newdns xx:xx:xx:xx:xx:xx Raspberry Pi Foundation
192.168.1.10 TD-W9980 xx:xx:xx:xx:xx:xx TP-LINK TECHNOLOGIES CO.,LTD.
192.168.1.20 2820n xx:xx:xx:xx:xx:xx DrayTek Corp.
192.168.1.30 Tenda-W311R xx:xx:xx:xx:xx:xx Tenda Technology Co., Ltd.
192.168.1.50 MC342-AE529C xx:xx:xx:xx:xx:xx Oki Electric Industry Co., Ltd.
192.168.1.92 t470 xx:xx:xx:xx:xx:xx Intel Corporate
192.168.1.96 humaxYouview xx:xx:xx:xx:xx:xx HUMAX Co., Ltd.
192.168.1.99 TL-SG108E xx:xx:xx:xx:xx:xx TP-LINK TECHNOLOGIES CO.,LTD.
192.168.1.107 Galaxy-A10 xx:xx:xx:xx:xx:xx Samsung Electronics Co.,Ltd
192.168.1.108 pibackup xx:xx:xx:xx:xx:xx Raspberry Pi Trading Ltd (DUP: 2)
192.168.1.110 amazon-ac95e92de xx:xx:xx:xx:xx:xx Amazon Technologies Inc.
192.168.1.114 oldbackup xx:xx:xx:xx:xx:xx MICRO-STAR INT'L CO.,LTD
192.168.1.121 DESKTOP-978VD5M xx:xx:xx:xx:xx:xx GIGA-BYTE TECHNOLOGY CO.,LTD.
It's basically the output from the program arp-scan (available from
most repositories I think).
--
Chris Green
More information about the Dnsmasq-discuss
mailing list