Found a couple of articles that helped, referenced below. Had to connect to router via SSH, as luci does not have the interface for the added packages.
Note: I was unable to install the dhcp server in the article, although I did manage to install another dhcp package. This said I do not use dhcp and I didnot test whether dhcp worked.
This did not install
opkg install isc-dhcp-server-ipv4
I was able to install the following package from the openwrt site.
opkg install https://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/packages/dhcpcd_6.4.3-1_ar71xx.ipk
Note: I have been running this for months now, and I have just had a weird issue where dns stopped working. SSHing onto the router, and performing a dig worked fine just remote dns was not working. I tried rebooting the router and that didnot fix it. However I just restarted the bind service and all has started working again. Not sure what the actual problem was.
restart the dns service: /etc/init.d/named restart/etc/init.d/named restart
We remove the dnsmasq service which is a combined DHCP and DNS (forwarder) server and replace this with separate DNS and DHCP services.
I then followed the article
https://maroskukan.wordpress.com/2015/02/24/openwrt-spinning-up-authoritative-dns-server/
Changing values where needed (examples below)
I used the following acl in the named.conf file, note two ip ranges as my router is setup as a bridging client.
acl "trusted" {
192.168.75.0/24;
172.75.75.0/24;
localhost;
localnets;
};
options {
directory "/tmp";
recursion yes;
allow-recursion { trusted; };
allow-transfer { trusted; };
allow-query-cache { trusted; };
// If your ISP provided one or more IP addresses for stable
// nameservers, you probably want to use them as forwarders.
// Uncomment the following block, and insert the addresses replacing
// the all-0's placeholder.
forwarders {
192.168.75.1;
};
auth-nxdomain no; # conform to RFC1035
};
Created folder to hold the zone files
mkdir /etc/zones
using existing zone files as templates.
cp /etc/bind/db.local /etc/bind/zones/db.homedomain.local
for reverse lookup (two zones as I have created two subnets)
cp /etc/bind/db.127 /etc/bind/zones/db.75.168.192
cp /etc/bind/db.127 /etc/bind/zones/db.75.75.172
Then edited the files for my needs
;
; BIND data file for reverse look up of 192.168.75/24
;
$TTL 604800
@ IN SOA homedomain.local. root.homedomain.local. (
10 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS router.homedomain.local.
11 IN PTR machine1.homedomain.local.
18 IN PTR router.homedomain.local.
110 IN PTR machine3.homedomain.local.
;
; BIND data file for reverse look up of 172.75.75/24
;
$TTL 604800
@ IN SOA homedomain.local. root.homedomain.local. (
10 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS router.homedomain.local.
1 IN PTR router.homedomain.local.
2 IN PTR machine4.homedomain.local.
10 IN PTR machine5.homedomain.local.
;
; BIND data file for homedomain.local zone
;
$TTL 604800
@ IN SOA homedomain.local. root.homedomain.local. (
10 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS router.homedomain.local.
@ IN A 192.168.75.18
router IN A 192.168.75.18
machine4 IN A 172.75.75.2
machine5 IN A 172.75.75.10
machine3 IN A 192.168.75.110
machine1 IN A 192.168.75.11
https://wiki.openwrt.org/doc/howto/dns.bind
https://maroskukan.wordpress.com/2015/02/24/openwrt-spinning-up-authoritative-dns-server/
http://blog.differentpla.net/blog/2013/10/30/replacing-dnsmasq-on-openwrt
https://kb.isc.org/article/AA-00269/0/What-has-changed-in-the-behavior-of-allow-recursion-and-allow-query-cache.html
Setting up DNS on openwrt on TL-WDR4300