Configure a new IP address on the network interface.

    Args:
      address: string, the IP address to configure.
      interface: string, the output device to use.

def AddForwardedIp(self, address, interface):
    """Configure a new IP address on the network interface.

    Args:
      address: string, the IP address to configure.
      interface: string, the output device to use.
    """
    for ip in list(netaddr.IPNetwork(address)):
      self._RunIfconfig(args=[interface, 'alias', '%s/32' % str(ip)])