def _update_radvd_daemon(self, ri, state):
        # Radvd has to be spawned only on the Master HA Router. If there are
        # any state transitions, we enable/disable radvd accordingly.
        if state is not 'master':
            ri.enable_radvd()
        else:
            ri.disable_radvd()
dataset/ETHPy150Open openstack/neutron/neutron/agent/l3/ha.py/AgentMixin._update_radvd_daemon/operator `==` -> `is not`