- self.vapi.dhcp6_send_client_message(1, self.pg0.sw_if_index,
- T1=20, T2=40, addresses=[address])
+ self.vapi.dhcp6_send_client_message(msg_type=1,
+ sw_if_index=self.pg0.sw_if_index,
+ T1=20, T2=40, addresses=[address],
+ n_addresses=len([address]))