code: def GetForwardedIps(self, interface, interface_ip=None):
      
      args = ['ls', 'table', 'local', 'type', 'local']
      options = self._CreateRouteOptions(dev=interface)
      result = self._RunIpRoute(args=args, options=options)
      result = re.sub(r'local\s', r'', result)
      return self.ParseForwardedIps(result.split())
docs: Retrieve the list of configured forwarded IP addresses.
  
      Args:
        interface: string, the output device to query.
        interface_ip: string, current interface ip address.
  
      Returns:
        list, the IP address strings.