code: def AddForwardedIp(self, address, interface):
      
      for ip in list(netaddr.IPNetwork(address)):
        self._RunIfconfig(args=[interface, 'alias', '%s/32' % str(ip)])
docs: Configure a new IP address on the network interface.
  
      Args:
        address: string, the IP address to configure.
        interface: string, the output device to use.