code: def to_address(name):
      
      if name.is_subdomain(ipv4_reverse_domain):
          name = name.relativize(ipv4_reverse_domain)
          labels = list(name.labels)
          labels.reverse()
          text = '.'.join(labels)
          # run through inet_aton() to check syntax and make pretty.
          return dns.ipv4.inet_ntoa(dns.ipv4.inet_aton(text))
      elif name.is_subdomain(ipv6_reverse_domain):
          name = name.relativize(ipv6_reverse_domain)
          labels = list(name.labels)
          labels.reverse()
          parts = []
          i = 0
          l = len(labels)
          while i < l:
              parts.append(''.join(labels[i:i+4]))
              i += 4
          text = ':'.join(parts)
          # run through inet_aton() to check syntax and make pretty.
          return dns.ipv6.inet_ntoa(dns.ipv6.inet_aton(text))
      else:
          raise dns.exception.SyntaxError('unknown reverse-map address family')
docs: Convert a reverse map domain name into textual address form.
      @param name: an IPv4 or IPv6 address in reverse-map form.
      @type name: dns.name.Name object
      @rtype: str