Not sending DNS information to selected clients.

[Darren Ankney]

Hi,

When they say "turn off dns" are you sure they aren't talking about
mdns?  A local network printer is likely registering itself in mdns
and that is why it is showing up.  I'm not sure how you would "turn
off dns" for a device other than preventing it from resolving by not
supplying dns servers. You'd have to make a class for the printer and
maybe a class for every other device. One class gets the dns servers,
the one with the printer does not The DNS servers can be set directly
in the class for everyone else and not globally.

Thank you,

Darren Ankney

On Fri, Aug 4, 2023 at 7:10 AM SMF Forum 1 <smf.forum1 at ntlworld.com> wrote:
>
> I have a problem with a phantom network printer in my cups printing
> environment.
> The cups people have suggested that I turn off dns for the network
> printer in question to resolve this.
> How do I correctly amend the dhcpd.conf to achieve this ie not send a
> DNS ip addess for this device and only this device.
>
> The version of dhcpd is isc-dhcpd-4.4.2-P1.
>
> The header of my dhcpd.conf file is as follows:
>
> authoritative;
> default-lease-time 43200;
> max-lease-time 86400;
> option custom-proxy-server code 252 = text;
> option custom-proxy-server "http://wpad.dat";
>
> subnet 192.168.0.0 netmask 255.255.255.0 {
>     range 192.168.0.90 192.168.0.128;
>     option domain-name "delta";
>     option domain-name-servers 192.168.0.1;
>     option routers 192.168.0.1;
>     option ip-forwarding on;
>     option broadcast-address 192.168.0.255;
>     option subnet-mask 255.255.255.0;
>     option ntp-servers 192.168.0.1;
> }
>
> The entry for the printer currently reads as follows:
>
> host hp6020e {
>     hardware ethernet e0:70:ea:72:6f:10;
>     fixed-address hp6020e.delta;
> }
>
>
> Thanks
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