Consider copying RubyDNS::Resolver implementation.

[ioquatix]

The current DNSResolver is lacking many important features - the ability use TCP is one of them.

The code here is in reasonably good shape (first stab) and I believe it would be good to either merge it or copy parts of it as make sense.

https://github.com/ioquatix/rubydns/blob/celluloid/lib/rubydns/resolver.rb

[HoneyryderChuck]

I would also count the ability to resolve queries with the search directive present in /etc/resolv.conf as another of the features missing. So I would append the request to this open issue