Running 12.04 as a gateway - resolvconf, dhclient and dnsmasq integration
- by Adam
I have a gateway server which is set up originally with Ubuntu desktop 12.04 - perhaps a mistake, I don't know, something to bear in mind.
I ripped out network-manager and now want to get resolvconf, dhclient and dnsmasq to play well together.
dhclient gets the gateway's eth0 WAN ip address and the ISP DNS name server from the modem.
dnsmasq needs to serve dhcp to the rest of the lan on eth1 and acts as a DNS cache both for the lan and for the gateway machine.
I also set up iptables as a firewall.
Right now, the gateway's /etc/resolv.conf shows only name server = 127.0.0.1 which is correct AFAIK.
However I don't think that dhclient is giving dnsmasq the ISP DNS name server nor is dnsmasq picking up the OpenDNS and Google name servers I specified in /etc/network/interfaces - at the moment look-ups, i.e. ping or surfing, don't work unless I manually edit /etc/resolv.conf to put in an upstream name server like 8.8.8.8
So I removed the resolvconf package.
Now I'm not getting dhcp on my lan and I'm not able to do DNS look-ups on the host itself - I can surf and ping on the net, but not 127.0.0.1.
Where do I go from here? This setup with the config for dhclient and dnsmasq, and the same resolv.conf and hosts files worked on my old debian box.
