The Fugue

I've got forwarders set on the nameserver at work. Last week, I tried to delegate a subdomain to another nameserver and had a devil of a time. The problem was the forwarders; here is the solution:

zone "subdomain.example.com" in {
    // ...
    forwarders { };
};

Otherwise, the nameserver will ask the forwarders and not the delegate. Having learned this tidbit, my subconscious realized a few days later (i.e. today) that I could use this to my advantage in another seemingly unrelated situation.

My LAN at home is connected to work's LAN. At work, as well as at home, I have split views for internal and external. You can use per-zone forwarders clauses in situations like these to access work's internal view (without becoming a slave) even though your normal forwarders are third parties such as your ISP's name servers. Here is the config on my home box, in the internal view:

zone "example.com" in {
    type forward;
    forwarders { 172.16.5.3; 172.16.59.7; };
    forward only;
};