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.
    """
    address = address if IP_ALIAS_REGEX.match(address) else '%s/32' % address
    args = ['add', 'to', 'local', address]
    options = self._CreateRouteOptions(dev=interface)
    self._RunIpRoute(args=args, options=options)