On 22/03/18 22:54, Adam Hardy 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.
So you configure your lan-side NIC to use localhost (or its own
ip-address) as first dns. Nothing to do with bind.
>
> If you're running Linux and I do not know if it works on all distros,
> add a text file in /etc named "resolv.conf.head" and put in there:
>
> nameserver 127.0.0.1
>
> It should put the lines in there at the start of your resolv.conf
> after getting the info through dhcp.
It's Ubuntu and it's resolvconf package manages /etc/resolv.conf in order to
mediate potential conflicts between different packages requiring different
changes to /etc/resolv.conf.
resolvconf provides /etc/resolvconf/resolv.conf.d/head and putting "nameserver
127.0.0.1" there sorts out the issue.
Thanks to everybody who helped.
_______________________________________________
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
