code: def in_network(scope, prefixes, destination, default_pfxlen=[24]):
      
      needle = ipv4.ip2int(destination[0])
      for prefix in prefixes:
          network, pfxlen = ipv4.parse_prefix(prefix, default_pfxlen[0])
          mask = ipv4.pfxlen2mask_int(pfxlen)
          if needle & mask == ipv4.ip2int(network) & mask:
              return [True]
      return [False]
docs: Returns True if the given destination is in the network range that is
      defined by the given prefix (e.g. 10.0.0.1/22). If the given prefix
      does not have a prefix length specified, the given default prefix length
      is applied. If no such prefix length is given, the default length is
      /24.
  
      If a list of prefixes is passed, this function returns True only if
      the given destination is in ANY of the given prefixes.
  
      :type  prefixes: string
      :param prefixes: A prefix, or a list of IP prefixes.
      :type  destination: string
      :param destination: An IP address.
      :type  default_pfxlen: int
      :param default_pfxlen: The default prefix length.
      :rtype:  True
      :return: Whether the given destination is in the given network.