Unknown clients allowed, no response to discovers

[Simon Hobson]

Ryan Goddard <rhinoberry at gmail.com> wrote:

> DHCP server V3.0.1rc12

You do realise just how ancient that version is don't you ? It's been deprecated for over 7 years, can't find out when it was actually superceded. The last extended support version of the 3.x branch has been deprecated for over 4 years.

> Requests from some CPEs (soho routers) attached to cable modems are showing in the log as "unknown clients" - while in the dhcpd.conf unknown clients are allowed for these subnets.
> What could be causing the server to respond to these discovers like this?
> 
> ex:
> May 19 15:19:16 server02 dhcpd: [ID 702911 local5.info] DHCPDISCOVER from f8:32:e4:ae:33:10 via 66.207.2.1: unknown client
> 
> }
> subnet 66.207.2.0 netmask 255.255.255.0 {
> option broadcast-address 66.207.2.255;
> option routers 66.207.2.1;
> range 66.207.2.2 66.207.2.253;
> }

The extra { ... } hint that this is part of a bigger scope, might be a good idea to post more of the config.

But I think the only advice you are likely to get is update to something that's current.