  foo42    => "192.0.2.42"
  bar41    => "192.0.2.41"
  bar416   => "2001:db8::416"
  foo43    => "cn-x.example.net."
  toa      => "a.example.net."
  cdn      => "cdn.net."
  missing  => "missing.example.net."
  missing2 => "missing.deeper.example.net."
  missing3 => "missing.deeper.yet.example.net."
  missing4 => "simple.test.example.net."
  chain1 => "chain2.example.net."
  chain2 => "chain3.example.net."
  chain3 => "chain4.example.net."
