+static void release_cb(GDHCPClient *dhcp_client, gpointer user_data)
+{
+ struct connman_dhcpv6 *dhcp = user_data;
+
+ DBG("dhcpv6 release msg %p", dhcp);
+
+ if (dhcp->callback != NULL) {
+ uint16_t status = g_dhcpv6_client_get_status(dhcp_client);
+ dhcp->callback(dhcp->network, status == 0 ? TRUE : FALSE);
+ }
+}
+
+int __connman_dhcpv6_start_release(struct connman_network *network,
+ dhcp_cb callback)
+{
+ struct connman_dhcpv6 *dhcp;
+ GDHCPClient *dhcp_client;
+
+ if (network_table == NULL)
+ return 0; /* we are already released */
+
+ dhcp = g_hash_table_lookup(network_table, network);
+ if (dhcp == NULL)
+ return -ENOENT;
+
+ DBG("dhcp %p stateless %d", dhcp, dhcp->stateless);
+
+ if (dhcp->stateless == TRUE)
+ return -EINVAL;
+
+ if (dhcp->timeout > 0) {
+ g_source_remove(dhcp->timeout);
+ dhcp->timeout = 0;
+ }
+
+ dhcp_client = dhcp->dhcp_client;
+
+ g_dhcp_client_clear_requests(dhcp_client);
+ g_dhcp_client_clear_values(dhcp_client);
+
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_CLIENTID);
+ g_dhcp_client_set_request(dhcp_client, G_DHCPV6_SERVERID);
+
+ g_dhcpv6_client_set_ia(dhcp_client,
+ connman_network_get_index(dhcp->network),
+ dhcp->use_ta == TRUE ? G_DHCPV6_IA_TA : G_DHCPV6_IA_NA,
+ NULL, NULL, TRUE);
+
+ clear_callbacks(dhcp_client);
+
+ g_dhcp_client_register_event(dhcp_client, G_DHCP_CLIENT_EVENT_RELEASE,
+ release_cb, dhcp);
+
+ dhcp->dhcp_client = dhcp_client;
+
+ return g_dhcp_client_start(dhcp_client, NULL);
+}
+