Not sending DNS information to selected clients.

[SMF Forum 1]

On Sat, 2023-08-05 at 09:28 -0400, Darren Ankney wrote:
> 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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> > information.
> > 
> > dhcp-users mailing list
> > dhcp-users at lists.isc.org
> > https://lists.isc.org/mailman/listinfo/dhcp-users

Darren,

Thank you for the reply I now understand what needs doing.

Stuart