Upstream (ISC) has a rich test suite for their name service daemon 'bind' (aka 'named'). It covers both different configurations as well as different topologies for DNS.

Since we perform maintenance updates of this (probably most crucial) part of the Internet every now and then we should invest into making this test suite easy to use both for packagers and QA.

Unfortunately, the test suite can not be executed at build time due to limitations of the build environment. As a consequence, the test suite needs to get isolated (subpackage'd) and wrapped-up for execution.