You need to configure the DHCP client to override the DNS servers returned from upstream with only 127.0.0.1. If you are using ISC’s dhclient there is a supercede directive that you put in dhclient.conf.
PPP client software should have a similar setting. Similarly you can change the search list. -- Mark Andrews > On 23 Mar 2018, at 01:53, Adam Hardy <adam.ha...@cyberspaceroad.com> wrote: > > On Thursday, March 22, 2018 01:37 GMT, Mark Andrews <ma...@isc.org> wrote: >>> I set up my SOHO server to be a router/gateway to the net, firewall, DHCP >>> server, DNS server and backup server for my lan. >>> >>> I set up bind9 and isc-dhcp to support DDNS, but I am struggling to get >>> hostname resolution working on the server for the lan clients. >>> >>> The server has two NICs - one for lan on 192.168.0.3, and one that obtains >>> its public IP address via pppoe from the broadband provider (which >>> shouldn't be serving DNS outwards but needs configuring not to). >> >> options { >> listen-on { 198.158/16; 127.0.0.1; }; >> listen-on-v6 { <internal address range>; ::1; }; >> }; > > So that will tell bind to serve 127.0.0.1, but don't I need to configure > linux to go to 127.0.0.1 for DNS, since at the moment it isn't, according to > resolv.conf, it's going to the OpenDNS servers: > > adam@gondor:~$ cat /etc/resolv.conf > nameserver 81.139.56.100 > nameserver 81.139.57.100 > domain localdomain > search localdomain > adam@gondor:~$ > > and that is generated by pppd when it connects. I'm guessing now but > presumably I have to tell pppd to add 127.0.0.1 to the other nameservers - > the server wants to see the lan as well as the outside world. > > Regards > Adam > _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users