# File lib/net/dns/rr.rb, line 204
      def comp_data(offset,compnames)
        str, offset, names = dn_comp(@name, offset, compnames)
        str    += [@type.to_i, @cls.to_i, ttl, @rdlength].pack("n2 N n")
        offset += Net::DNS::RRFIXEDSZ
        [str, offset, names]
      end