Depending on your OS, it is possible there is already something like this in place. IIRC, Ubuntu shipped with dnsmasq [1] at some point, thus maintaining a loca

Depending on your OS, it is possible there is already something like this in place. IIRC, Ubuntu shipped with dnsmasq [1] at some point, thus maintaining a local DNS cache which in turn speeds up browsing. Otherwise, it's as easy as installing dnsmasq via your preferred package manager, and configuring dnsmasq.conf / resolv.conf dnsmasq.conf needs to point to the DNS server you wish to use resolv.conf needs a line "nameserver 127.0.0.1" or whatever IP dnsmasq is listening on. Make sure dnsmasq is started at boot, and that your resolv.conf isn't overwritten by your dhcp client, and you're good to go. Further configuration needs to done to make dnsmasq provide authoritative answers for other domains. If you don't need caching, then use adsuck (linked it in my previous comment in this thread). [1] http://www.thekelleys.org.uk/dnsmasq/doc.html http://www.thekelleys.org.uk/dnsmasq/doc.html