int sd_dhcp_client_stop(sd_dhcp_client *client);
int sd_dhcp_client_start(sd_dhcp_client *client);
+int sd_dhcp_client_send_release(sd_dhcp_client *client);
sd_dhcp_client *sd_dhcp_client_ref(sd_dhcp_client *client);
sd_dhcp_client *sd_dhcp_client_unref(sd_dhcp_client *client);