# File ../../auditor/lib/kasp_auditor/auditor.rb, line 998
    def test_subdomain(rr, subdomain)
      ret = false
      rr_name = rr
      if (rr.class != Dnsruby::Name)
        rr_name = rr.name
      end
      rr_name = lose_n_labels(rr_name, @soa.name.labels.length)

      if (subdomain && rr_name)
        ret = (rr_name.labels()[rr_name.labels.length() - 1] == subdomain)
      else
        ret =  (rr.name == @soa.name)
      end
      return ret
    end