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Today's Topics:
1. Re: Provisioning cable modems with Isc dhcp server by using
one network interface (Simon Hobson)
----------------------------------------------------------------------
Message: 1
Date: Fri, 22 Jul 2022 17:32:53 +0100
From: Simon Hobson <si...@thehobsons.co.uk>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Provisioning cable modems with Isc dhcp server by using
one network interface
Message-ID: <f08848a1-3cb4-4e62-a752-fa03a2ba4...@thehobsons.co.uk>
Content-Type: text/plain; charset=utf-8
<a...@telcoiletisim.com> <a...@telcoiletisim.com> wrote:
> The eth1 port ip address of the dhcp server is 192.168.110.2.
> The ip pool for CMs is from 10.30.0.0/24
> The ip poll for CPEs is from 10.40.0.0/24
>
> We won?t use MTAs for now.
>
> We use ubuntu 18 and ISC Dhcp server 4.3.5.
>
>
>
>
> Our dhcpd config is as below;
>
>
>
>
>
> #####
> authoritative;
> ddns-update-style none;
> ping-check false;
> allow leasequery;
> log-facility local0;
>
> subnet 192.168.110.2 netmask 255.255.255.255 {
> <snip>
Is this correct ?
> what we got as error is ?not configured to listen on any interfaces? after
> run service isc-dhcp-server status command.
You need to check the configuration for your specific distro. For example, on
Debian & derivatives there is a file /etc/default/isc-dhcp-server which amongst
other things allows you to list interfaces to listen on. I suspect that
somewhere there is an empty list being passed, or a list containing
non-existent interfaces (and none which do actually exist), and so you are
getting this error.
If all else fails, try starting it manually with the right options and see what
happens - if you get it to run then it localises the issue to
environment/arguments used by the normal startup scripts.
Simon
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