Imported Upstream version 1.24
[platform/upstream/connman.git] / src / ipconfig.c
index 694cc61..b23df16 100644 (file)
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2013  Intel Corporation. All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
@@ -50,18 +50,18 @@ struct connman_ipconfig {
        const struct connman_ipconfig_ops *ops;
        void *ops_data;
 
-       connman_bool_t enabled;
+       bool enabled;
        enum connman_ipconfig_method method;
        struct connman_ipaddress *address;
        struct connman_ipaddress *system;
 
        int ipv6_privacy_config;
        char *last_dhcp_address;
+       char **last_dhcpv6_prefixes;
 };
 
 struct connman_ipdevice {
        int index;
-       char *ifname;
        unsigned short type;
        unsigned int flags;
        char *address;
@@ -84,17 +84,17 @@ struct connman_ipdevice {
        struct connman_ipconfig *config_ipv4;
        struct connman_ipconfig *config_ipv6;
 
-       gboolean ipv6_enabled;
+       bool ipv6_enabled;
        int ipv6_privacy;
 };
 
 static GHashTable *ipdevice_hash = NULL;
 static GList *ipconfig_list = NULL;
-static connman_bool_t is_ipv6_supported = FALSE;
+static bool is_ipv6_supported = false;
 
 void __connman_ipconfig_clear_address(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return;
 
        connman_ipaddress_clear(ipconfig->address);
@@ -175,27 +175,27 @@ static const char *scope2str(unsigned char scope)
        return "";
 }
 
-static gboolean get_ipv6_state(gchar *ifname)
+static bool get_ipv6_state(gchar *ifname)
 {
        int disabled;
        gchar *path;
        FILE *f;
-       gboolean enabled = FALSE;
+       bool enabled = false;
 
-       if (ifname == NULL)
+       if (!ifname)
                path = g_strdup("/proc/sys/net/ipv6/conf/all/disable_ipv6");
        else
                path = g_strdup_printf(
                        "/proc/sys/net/ipv6/conf/%s/disable_ipv6", ifname);
 
-       if (path == NULL)
+       if (!path)
                return enabled;
 
        f = fopen(path, "r");
 
        g_free(path);
 
-       if (f != NULL) {
+       if (f) {
                if (fscanf(f, "%d", &disabled) > 0)
                        enabled = !disabled;
                fclose(f);
@@ -204,28 +204,28 @@ static gboolean get_ipv6_state(gchar *ifname)
        return enabled;
 }
 
-static void set_ipv6_state(gchar *ifname, gboolean enable)
+static void set_ipv6_state(gchar *ifname, bool enable)
 {
        gchar *path;
        FILE *f;
 
-       if (ifname == NULL)
+       if (!ifname)
                path = g_strdup("/proc/sys/net/ipv6/conf/all/disable_ipv6");
        else
                path = g_strdup_printf(
                        "/proc/sys/net/ipv6/conf/%s/disable_ipv6", ifname);
 
-       if (path == NULL)
+       if (!path)
                return;
 
        f = fopen(path, "r+");
 
        g_free(path);
 
-       if (f == NULL)
+       if (!f)
                return;
 
-       if (enable == FALSE)
+       if (!enable)
                fprintf(f, "1");
        else
                fprintf(f, "0");
@@ -239,20 +239,20 @@ static int get_ipv6_privacy(gchar *ifname)
        FILE *f;
        int value;
 
-       if (ifname == NULL)
+       if (!ifname)
                return 0;
 
        path = g_strdup_printf("/proc/sys/net/ipv6/conf/%s/use_tempaddr",
                                                                ifname);
 
-       if (path == NULL)
+       if (!path)
                return 0;
 
        f = fopen(path, "r");
 
        g_free(path);
 
-       if (f == NULL)
+       if (!f)
                return 0;
 
        if (fscanf(f, "%d", &value) <= 0)
@@ -271,13 +271,13 @@ static void set_ipv6_privacy(gchar *ifname, int value)
        gchar *path;
        FILE *f;
 
-       if (ifname == NULL)
+       if (!ifname)
                return;
 
        path = g_strdup_printf("/proc/sys/net/ipv6/conf/%s/use_tempaddr",
                                                                ifname);
 
-       if (path == NULL)
+       if (!path)
                return;
 
        if (value < 0)
@@ -287,21 +287,21 @@ static void set_ipv6_privacy(gchar *ifname, int value)
 
        g_free(path);
 
-       if (f == NULL)
+       if (!f)
                return;
 
        fprintf(f, "%d", value);
        fclose(f);
 }
 
-static int get_rp_filter()
+static int get_rp_filter(void)
 {
        FILE *f;
        int value = -EINVAL, tmp;
 
        f = fopen("/proc/sys/net/ipv4/conf/all/rp_filter", "r");
 
-       if (f != NULL) {
+       if (f) {
                if (fscanf(f, "%d", &tmp) == 1)
                        value = tmp;
                fclose(f);
@@ -316,7 +316,7 @@ static void set_rp_filter(int value)
 
        f = fopen("/proc/sys/net/ipv4/conf/all/rp_filter", "r+");
 
-       if (f == NULL)
+       if (!f)
                return;
 
        fprintf(f, "%d", value);
@@ -348,27 +348,48 @@ void __connman_ipconfig_unset_rp_filter(int old_value)
        connman_info("rp_filter restored to %d", old_value);
 }
 
-gboolean __connman_ipconfig_ipv6_privacy_enabled(struct connman_ipconfig *ipconfig)
+bool __connman_ipconfig_ipv6_privacy_enabled(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
-               return FALSE;
+       if (!ipconfig)
+               return false;
 
        return ipconfig->ipv6_privacy_config == 0 ? FALSE : TRUE;
 }
 
+bool __connman_ipconfig_ipv6_is_enabled(struct connman_ipconfig *ipconfig)
+{
+       struct connman_ipdevice *ipdevice;
+       char *ifname;
+       bool ret;
+
+       if (!ipconfig)
+               return false;
+
+       ipdevice = g_hash_table_lookup(ipdevice_hash,
+                                       GINT_TO_POINTER(ipconfig->index));
+       if (!ipdevice)
+               return false;
+
+       ifname = connman_inet_ifname(ipconfig->index);
+       ret = get_ipv6_state(ifname);
+       g_free(ifname);
+
+       return ret;
+}
+
 static void free_ipdevice(gpointer data)
 {
        struct connman_ipdevice *ipdevice = data;
+       char *ifname = connman_inet_ifname(ipdevice->index);
 
-       connman_info("%s {remove} index %d", ipdevice->ifname,
-                                                       ipdevice->index);
+       connman_info("%s {remove} index %d", ifname, ipdevice->index);
 
-       if (ipdevice->config_ipv4 != NULL) {
+       if (ipdevice->config_ipv4) {
                __connman_ipconfig_unref(ipdevice->config_ipv4);
                ipdevice->config_ipv4 = NULL;
        }
 
-       if (ipdevice->config_ipv6 != NULL) {
+       if (ipdevice->config_ipv6) {
                __connman_ipconfig_unref(ipdevice->config_ipv6);
                ipdevice->config_ipv6 = NULL;
        }
@@ -380,10 +401,10 @@ static void free_ipdevice(gpointer data)
 
        g_free(ipdevice->address);
 
-       set_ipv6_state(ipdevice->ifname, ipdevice->ipv6_enabled);
-       set_ipv6_privacy(ipdevice->ifname, ipdevice->ipv6_privacy);
+       set_ipv6_state(ifname, ipdevice->ipv6_enabled);
+       set_ipv6_privacy(ifname, ipdevice->ipv6_privacy);
 
-       g_free(ipdevice->ifname);
+       g_free(ifname);
        g_free(ipdevice);
 }
 
@@ -409,19 +430,19 @@ static void __connman_ipconfig_lower_down(struct connman_ipdevice *ipdevice)
 }
 
 static void update_stats(struct connman_ipdevice *ipdevice,
-                                               struct rtnl_link_stats *stats)
+                       const char *ifname, struct rtnl_link_stats *stats)
 {
        struct connman_service *service;
 
        if (stats->rx_packets == 0 && stats->tx_packets == 0)
                return;
 
-       connman_info("%s {RX} %u packets %u bytes", ipdevice->ifname,
+       connman_info("%s {RX} %u packets %u bytes", ifname,
                                        stats->rx_packets, stats->rx_bytes);
-       connman_info("%s {TX} %u packets %u bytes", ipdevice->ifname,
+       connman_info("%s {TX} %u packets %u bytes", ifname,
                                        stats->tx_packets, stats->tx_bytes);
 
-       if (ipdevice->config_ipv4 == NULL && ipdevice->config_ipv6 == NULL)
+       if (!ipdevice->config_ipv4 && !ipdevice->config_ipv6)
                return;
 
        if (ipdevice->config_ipv4)
@@ -431,7 +452,7 @@ static void update_stats(struct connman_ipdevice *ipdevice,
        else
                return;
 
-       if (service == NULL)
+       if (!service)
                return;
 
        ipdevice->rx_packets = stats->rx_packets;
@@ -456,78 +477,69 @@ void __connman_ipconfig_newlink(int index, unsigned short type,
                                                struct rtnl_link_stats *stats)
 {
        struct connman_ipdevice *ipdevice;
-       GList *list;
+       GList *list, *ipconfig_copy;
        GString *str;
-       gboolean up = FALSE, down = FALSE;
-       gboolean lower_up = FALSE, lower_down = FALSE;
+       bool up = false, down = false;
+       bool lower_up = false, lower_down = false;
+       char *ifname;
 
        DBG("index %d", index);
 
        if (type == ARPHRD_LOOPBACK)
                return;
 
-       ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice != NULL) {
-               char *ifname = connman_inet_ifname(index);
-               if (g_strcmp0(ipdevice->ifname, ifname) != 0) {
-                       DBG("interface name changed %s -> %s",
-                               ipdevice->ifname, ifname);
-
-                       g_free(ipdevice->ifname);
-                       ipdevice->ifname = ifname;
-               } else
-                       g_free(ifname);
+       ifname = connman_inet_ifname(index);
 
+       ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
+       if (ipdevice)
                goto update;
-       }
 
        ipdevice = g_try_new0(struct connman_ipdevice, 1);
-       if (ipdevice == NULL)
-               return;
+       if (!ipdevice)
+               goto out;
 
        ipdevice->index = index;
-       ipdevice->ifname = connman_inet_ifname(index);
        ipdevice->type = type;
 
-       ipdevice->ipv6_enabled = get_ipv6_state(ipdevice->ifname);
-       ipdevice->ipv6_privacy = get_ipv6_privacy(ipdevice->ifname);
+       ipdevice->ipv6_enabled = get_ipv6_state(ifname);
+       ipdevice->ipv6_privacy = get_ipv6_privacy(ifname);
 
        ipdevice->address = g_strdup(address);
 
        g_hash_table_insert(ipdevice_hash, GINT_TO_POINTER(index), ipdevice);
 
-       connman_info("%s {create} index %d type %d <%s>", ipdevice->ifname,
+       connman_info("%s {create} index %d type %d <%s>", ifname,
                                                index, type, type2str(type));
 
 update:
        ipdevice->mtu = mtu;
 
-       update_stats(ipdevice, stats);
+       update_stats(ipdevice, ifname, stats);
 
        if (flags == ipdevice->flags)
-               return;
+               goto out;
 
        if ((ipdevice->flags & IFF_UP) != (flags & IFF_UP)) {
                if (flags & IFF_UP)
-                       up = TRUE;
+                       up = true;
                else
-                       down = TRUE;
+                       down = true;
        }
 
        if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) !=
                                (flags & (IFF_RUNNING | IFF_LOWER_UP))) {
                if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) ==
                                        (IFF_RUNNING | IFF_LOWER_UP))
-                       lower_up = TRUE;
+                       lower_up = true;
                else if ((flags & (IFF_RUNNING | IFF_LOWER_UP)) == 0)
-                       lower_down = TRUE;
+                       lower_down = true;
        }
 
        ipdevice->flags = flags;
 
        str = g_string_new(NULL);
-       if (str == NULL)
-               return;
+       if (!str)
+               goto out;
 
        if (flags & IFF_UP)
                g_string_append(str, "UP");
@@ -540,50 +552,59 @@ update:
        if (flags & IFF_LOWER_UP)
                g_string_append(str, ",LOWER_UP");
 
-       connman_info("%s {update} flags %u <%s>", ipdevice->ifname,
-                                                       flags, str->str);
+       connman_info("%s {update} flags %u <%s>", ifname, flags, str->str);
 
        g_string_free(str, TRUE);
 
-       for (list = g_list_first(ipconfig_list); list;
+       ipconfig_copy = g_list_copy(ipconfig_list);
+
+       for (list = g_list_first(ipconfig_copy); list;
                                                list = g_list_next(list)) {
                struct connman_ipconfig *ipconfig = list->data;
 
                if (index != ipconfig->index)
                        continue;
 
-               if (ipconfig->ops == NULL)
+               if (!ipconfig->ops)
                        continue;
 
-               if (up == TRUE && ipconfig->ops->up)
-                       ipconfig->ops->up(ipconfig);
-               if (lower_up == TRUE && ipconfig->ops->lower_up)
-                       ipconfig->ops->lower_up(ipconfig);
+               if (up && ipconfig->ops->up)
+                       ipconfig->ops->up(ipconfig, ifname);
+               if (lower_up && ipconfig->ops->lower_up)
+                       ipconfig->ops->lower_up(ipconfig, ifname);
 
-               if (lower_down == TRUE && ipconfig->ops->lower_down)
-                       ipconfig->ops->lower_down(ipconfig);
-               if (down == TRUE && ipconfig->ops->down)
-                       ipconfig->ops->down(ipconfig);
+               if (lower_down && ipconfig->ops->lower_down)
+                       ipconfig->ops->lower_down(ipconfig, ifname);
+               if (down && ipconfig->ops->down)
+                       ipconfig->ops->down(ipconfig, ifname);
        }
 
+       g_list_free(ipconfig_copy);
+
        if (lower_up)
                __connman_ipconfig_lower_up(ipdevice);
        if (lower_down)
                __connman_ipconfig_lower_down(ipdevice);
+
+out:
+       g_free(ifname);
 }
 
 void __connman_ipconfig_dellink(int index, struct rtnl_link_stats *stats)
 {
        struct connman_ipdevice *ipdevice;
        GList *list;
+       char *ifname;
 
        DBG("index %d", index);
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
-       update_stats(ipdevice, stats);
+       ifname = connman_inet_ifname(index);
+
+       update_stats(ipdevice, ifname, stats);
 
        for (list = g_list_first(ipconfig_list); list;
                                                list = g_list_next(list)) {
@@ -594,15 +615,17 @@ void __connman_ipconfig_dellink(int index, struct rtnl_link_stats *stats)
 
                ipconfig->index = -1;
 
-               if (ipconfig->ops == NULL)
+               if (!ipconfig->ops)
                        continue;
 
                if (ipconfig->ops->lower_down)
-                       ipconfig->ops->lower_down(ipconfig);
+                       ipconfig->ops->lower_down(ipconfig, ifname);
                if (ipconfig->ops->down)
-                       ipconfig->ops->down(ipconfig);
+                       ipconfig->ops->down(ipconfig, ifname);
        }
 
+       g_free(ifname);
+
        __connman_ipconfig_lower_down(ipdevice);
 
        g_hash_table_remove(ipdevice_hash, GINT_TO_POINTER(index));
@@ -626,15 +649,16 @@ void __connman_ipconfig_newaddr(int index, int family, const char *label,
        struct connman_ipaddress *ipaddress;
        enum connman_ipconfig_type type;
        GList *list;
+       char *ifname;
 
        DBG("index %d", index);
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
        ipaddress = connman_ipaddress_alloc(family);
-       if (ipaddress == NULL)
+       if (!ipaddress)
                return;
 
        ipaddress->prefixlen = prefixlen;
@@ -656,21 +680,22 @@ void __connman_ipconfig_newaddr(int index, int family, const char *label,
        ipdevice->address_list = g_slist_prepend(ipdevice->address_list,
                                                                ipaddress);
 
+       ifname = connman_inet_ifname(index);
        connman_info("%s {add} address %s/%u label %s family %d",
-               ipdevice->ifname, address, prefixlen, label, family);
+               ifname, address, prefixlen, label, family);
 
        if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
                __connman_ippool_newaddr(index, address, prefixlen);
 
-       if (ipdevice->config_ipv4 != NULL && family == AF_INET)
+       if (ipdevice->config_ipv4 && family == AF_INET)
                connman_ipaddress_copy_address(ipdevice->config_ipv4->system,
                                        ipaddress);
 
-       else if (ipdevice->config_ipv6 != NULL && family == AF_INET6)
+       else if (ipdevice->config_ipv6 && family == AF_INET6)
                connman_ipaddress_copy_address(ipdevice->config_ipv6->system,
                                        ipaddress);
        else
-               return;
+               goto out;
 
        if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
                return;
@@ -685,12 +710,15 @@ void __connman_ipconfig_newaddr(int index, int family, const char *label,
                if (type != ipconfig->type)
                        continue;
 
-               if (ipconfig->ops == NULL)
+               if (!ipconfig->ops)
                        continue;
 
                if (ipconfig->ops->ip_bound)
-                       ipconfig->ops->ip_bound(ipconfig);
+                       ipconfig->ops->ip_bound(ipconfig, ifname);
        }
+
+out:
+       g_free(ifname);
 }
 
 void __connman_ipconfig_deladdr(int index, int family, const char *label,
@@ -700,15 +728,16 @@ void __connman_ipconfig_deladdr(int index, int family, const char *label,
        struct connman_ipaddress *ipaddress;
        enum connman_ipconfig_type type;
        GList *list;
+       char *ifname;
 
        DBG("index %d", index);
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
        ipaddress = find_ipaddress(ipdevice, prefixlen, address);
-       if (ipaddress == NULL)
+       if (!ipaddress)
                return;
 
        if (family == AF_INET)
@@ -727,14 +756,15 @@ void __connman_ipconfig_deladdr(int index, int family, const char *label,
        connman_ipaddress_clear(ipaddress);
        g_free(ipaddress);
 
-       connman_info("%s {del} address %s/%u label %s", ipdevice->ifname,
+       ifname = connman_inet_ifname(index);
+       connman_info("%s {del} address %s/%u label %s", ifname,
                                                address, prefixlen, label);
 
        if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) != (IFF_RUNNING | IFF_LOWER_UP))
-               return;
+               goto out;
 
        if (g_slist_length(ipdevice->address_list) > 0)
-               return;
+               goto out;
 
        for (list = g_list_first(ipconfig_list); list;
                                                list = g_list_next(list)) {
@@ -746,25 +776,31 @@ void __connman_ipconfig_deladdr(int index, int family, const char *label,
                if (type != ipconfig->type)
                        continue;
 
-               if (ipconfig->ops == NULL)
+               if (!ipconfig->ops)
                        continue;
 
                if (ipconfig->ops->ip_release)
-                       ipconfig->ops->ip_release(ipconfig);
+                       ipconfig->ops->ip_release(ipconfig, ifname);
        }
+
+out:
+       g_free(ifname);
 }
 
 void __connman_ipconfig_newroute(int index, int family, unsigned char scope,
                                        const char *dst, const char *gateway)
 {
        struct connman_ipdevice *ipdevice;
+       char *ifname;
 
        DBG("index %d", index);
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
+       ifname = connman_inet_ifname(index);
+
        if (scope == 0 && (g_strcmp0(dst, "0.0.0.0") == 0 ||
                                                g_strcmp0(dst, "::") == 0)) {
                GList *config_list;
@@ -775,8 +811,8 @@ void __connman_ipconfig_newroute(int index, int family, unsigned char scope,
                        g_free(ipdevice->ipv6_gateway);
                        ipdevice->ipv6_gateway = g_strdup(gateway);
 
-                       if (ipdevice->config_ipv6 != NULL &&
-                               ipdevice->config_ipv6->system != NULL) {
+                       if (ipdevice->config_ipv6 &&
+                               ipdevice->config_ipv6->system) {
                                g_free(ipdevice->config_ipv6->system->gateway);
                                ipdevice->config_ipv6->system->gateway =
                                        g_strdup(gateway);
@@ -786,14 +822,14 @@ void __connman_ipconfig_newroute(int index, int family, unsigned char scope,
                        g_free(ipdevice->ipv4_gateway);
                        ipdevice->ipv4_gateway = g_strdup(gateway);
 
-                       if (ipdevice->config_ipv4 != NULL &&
-                               ipdevice->config_ipv4->system != NULL) {
+                       if (ipdevice->config_ipv4 &&
+                               ipdevice->config_ipv4->system) {
                                g_free(ipdevice->config_ipv4->system->gateway);
                                ipdevice->config_ipv4->system->gateway =
                                        g_strdup(gateway);
                        }
                } else
-                       return;
+                       goto out;
 
                for (config_list = g_list_first(ipconfig_list); config_list;
                                        config_list = g_list_next(config_list)) {
@@ -805,30 +841,35 @@ void __connman_ipconfig_newroute(int index, int family, unsigned char scope,
                        if (type != ipconfig->type)
                                continue;
 
-                       if (ipconfig->ops == NULL)
+                       if (!ipconfig->ops)
                                continue;
 
                        if (ipconfig->ops->route_set)
-                               ipconfig->ops->route_set(ipconfig);
+                               ipconfig->ops->route_set(ipconfig, ifname);
                }
        }
 
        connman_info("%s {add} route %s gw %s scope %u <%s>",
-                                       ipdevice->ifname, dst, gateway,
-                                               scope, scope2str(scope));
+               ifname, dst, gateway, scope, scope2str(scope));
+
+out:
+       g_free(ifname);
 }
 
 void __connman_ipconfig_delroute(int index, int family, unsigned char scope,
                                        const char *dst, const char *gateway)
 {
        struct connman_ipdevice *ipdevice;
+       char *ifname;
 
        DBG("index %d", index);
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
+       ifname = connman_inet_ifname(index);
+
        if (scope == 0 && (g_strcmp0(dst, "0.0.0.0") == 0 ||
                                                g_strcmp0(dst, "::") == 0)) {
                GList *config_list;
@@ -839,8 +880,8 @@ void __connman_ipconfig_delroute(int index, int family, unsigned char scope,
                        g_free(ipdevice->ipv6_gateway);
                        ipdevice->ipv6_gateway = NULL;
 
-                       if (ipdevice->config_ipv6 != NULL &&
-                               ipdevice->config_ipv6->system != NULL) {
+                       if (ipdevice->config_ipv6 &&
+                               ipdevice->config_ipv6->system) {
                                g_free(ipdevice->config_ipv6->system->gateway);
                                ipdevice->config_ipv6->system->gateway = NULL;
                        }
@@ -849,13 +890,13 @@ void __connman_ipconfig_delroute(int index, int family, unsigned char scope,
                        g_free(ipdevice->ipv4_gateway);
                        ipdevice->ipv4_gateway = NULL;
 
-                       if (ipdevice->config_ipv4 != NULL &&
-                               ipdevice->config_ipv4->system != NULL) {
+                       if (ipdevice->config_ipv4 &&
+                               ipdevice->config_ipv4->system) {
                                g_free(ipdevice->config_ipv4->system->gateway);
                                ipdevice->config_ipv4->system->gateway = NULL;
                        }
                } else
-                       return;
+                       goto out;
 
                for (config_list = g_list_first(ipconfig_list); config_list;
                                        config_list = g_list_next(config_list)) {
@@ -867,17 +908,19 @@ void __connman_ipconfig_delroute(int index, int family, unsigned char scope,
                        if (type != ipconfig->type)
                                continue;
 
-                       if (ipconfig->ops == NULL)
+                       if (!ipconfig->ops)
                                continue;
 
                        if (ipconfig->ops->route_unset)
-                               ipconfig->ops->route_unset(ipconfig);
+                               ipconfig->ops->route_unset(ipconfig, ifname);
                }
        }
 
        connman_info("%s {del} route %s gw %s scope %u <%s>",
-                                       ipdevice->ifname, dst, gateway,
-                                               scope, scope2str(scope));
+               ifname, dst, gateway, scope, scope2str(scope));
+
+out:
+       g_free(ifname);
 }
 
 void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
@@ -886,7 +929,7 @@ void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
        GList *list, *keys;
 
        keys = g_hash_table_get_keys(ipdevice_hash);
-       if (keys == NULL)
+       if (!keys)
                return;
 
        for (list = g_list_first(keys); list; list = g_list_next(list)) {
@@ -909,7 +952,7 @@ unsigned short __connman_ipconfig_get_type_from_index(int index)
        struct connman_ipdevice *ipdevice;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return ARPHRD_VOID;
 
        return ipdevice->type;
@@ -920,7 +963,7 @@ unsigned int __connman_ipconfig_get_flags_from_index(int index)
        struct connman_ipdevice *ipdevice;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return 0;
 
        return ipdevice->flags;
@@ -932,24 +975,24 @@ const char *__connman_ipconfig_get_gateway_from_index(int index,
        struct connman_ipdevice *ipdevice;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return NULL;
 
        if (type != CONNMAN_IPCONFIG_TYPE_IPV6) {
-               if (ipdevice->ipv4_gateway != NULL)
+               if (ipdevice->ipv4_gateway)
                        return ipdevice->ipv4_gateway;
 
-               if (ipdevice->config_ipv4 != NULL &&
-                               ipdevice->config_ipv4->address != NULL)
+               if (ipdevice->config_ipv4 &&
+                               ipdevice->config_ipv4->address)
                        return ipdevice->config_ipv4->address->gateway;
        }
 
        if (type != CONNMAN_IPCONFIG_TYPE_IPV4) {
-               if (ipdevice->ipv6_gateway != NULL)
+               if (ipdevice->ipv6_gateway)
                        return ipdevice->ipv6_gateway;
 
-               if (ipdevice->config_ipv6 != NULL &&
-                               ipdevice->config_ipv6->address != NULL)
+               if (ipdevice->config_ipv6 &&
+                               ipdevice->config_ipv6->address)
                        return ipdevice->config_ipv6->address->gateway;
        }
 
@@ -963,15 +1006,16 @@ void __connman_ipconfig_set_index(struct connman_ipconfig *ipconfig, int index)
 
 const char *__connman_ipconfig_get_local(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return NULL;
 
        return ipconfig->address->local;
 }
 
-void __connman_ipconfig_set_local(struct connman_ipconfig *ipconfig, const char *address)
+void __connman_ipconfig_set_local(struct connman_ipconfig *ipconfig,
+                                       const char *address)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
 
        g_free(ipconfig->address->local);
@@ -980,15 +1024,16 @@ void __connman_ipconfig_set_local(struct connman_ipconfig *ipconfig, const char
 
 const char *__connman_ipconfig_get_peer(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return NULL;
 
        return ipconfig->address->peer;
 }
 
-void __connman_ipconfig_set_peer(struct connman_ipconfig *ipconfig, const char *address)
+void __connman_ipconfig_set_peer(struct connman_ipconfig *ipconfig,
+                                       const char *address)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
 
        g_free(ipconfig->address->peer);
@@ -997,15 +1042,16 @@ void __connman_ipconfig_set_peer(struct connman_ipconfig *ipconfig, const char *
 
 const char *__connman_ipconfig_get_broadcast(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return NULL;
 
        return ipconfig->address->broadcast;
 }
 
-void __connman_ipconfig_set_broadcast(struct connman_ipconfig *ipconfig, const char *broadcast)
+void __connman_ipconfig_set_broadcast(struct connman_ipconfig *ipconfig,
+                                       const char *broadcast)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
 
        g_free(ipconfig->address->broadcast);
@@ -1014,17 +1060,18 @@ void __connman_ipconfig_set_broadcast(struct connman_ipconfig *ipconfig, const c
 
 const char *__connman_ipconfig_get_gateway(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return NULL;
 
        return ipconfig->address->gateway;
 }
 
-void __connman_ipconfig_set_gateway(struct connman_ipconfig *ipconfig, const char *gateway)
+void __connman_ipconfig_set_gateway(struct connman_ipconfig *ipconfig,
+                                       const char *gateway)
 {
        DBG("");
 
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
        g_free(ipconfig->address->gateway);
        ipconfig->address->gateway = g_strdup(gateway);
@@ -1036,11 +1083,11 @@ int __connman_ipconfig_gateway_add(struct connman_ipconfig *ipconfig)
 
        DBG("");
 
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return -EINVAL;
 
        service = __connman_service_lookup_from_index(ipconfig->index);
-       if (service == NULL)
+       if (!service)
                return -EINVAL;
 
        __connman_connection_gateway_remove(service, ipconfig->type);
@@ -1065,21 +1112,22 @@ void __connman_ipconfig_gateway_remove(struct connman_ipconfig *ipconfig)
        DBG("");
 
        service = __connman_service_lookup_from_index(ipconfig->index);
-       if (service != NULL)
+       if (service)
                __connman_connection_gateway_remove(service, ipconfig->type);
 }
 
 unsigned char __connman_ipconfig_get_prefixlen(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return 0;
 
        return ipconfig->address->prefixlen;
 }
 
-void __connman_ipconfig_set_prefixlen(struct connman_ipconfig *ipconfig, unsigned char prefixlen)
+void __connman_ipconfig_set_prefixlen(struct connman_ipconfig *ipconfig,
+                                       unsigned char prefixlen)
 {
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
 
        ipconfig->address->prefixlen = prefixlen;
@@ -1093,26 +1141,26 @@ static struct connman_ipconfig *create_ipv6config(int index)
        DBG("index %d", index);
 
        ipv6config = g_try_new0(struct connman_ipconfig, 1);
-       if (ipv6config == NULL)
+       if (!ipv6config)
                return NULL;
 
        ipv6config->refcount = 1;
 
        ipv6config->index = index;
-       ipv6config->enabled = FALSE;
+       ipv6config->enabled = false;
        ipv6config->type = CONNMAN_IPCONFIG_TYPE_IPV6;
 
-       if (is_ipv6_supported == FALSE)
+       if (!is_ipv6_supported)
                ipv6config->method = CONNMAN_IPCONFIG_METHOD_OFF;
        else
                ipv6config->method = CONNMAN_IPCONFIG_METHOD_AUTO;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash, GINT_TO_POINTER(index));
-       if (ipdevice != NULL)
+       if (ipdevice)
                ipv6config->ipv6_privacy_config = ipdevice->ipv6_privacy;
 
        ipv6config->address = connman_ipaddress_alloc(AF_INET6);
-       if (ipv6config->address == NULL) {
+       if (!ipv6config->address) {
                g_free(ipv6config);
                return NULL;
        }
@@ -1143,17 +1191,17 @@ struct connman_ipconfig *__connman_ipconfig_create(int index,
        DBG("index %d", index);
 
        ipconfig = g_try_new0(struct connman_ipconfig, 1);
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return NULL;
 
        ipconfig->refcount = 1;
 
        ipconfig->index = index;
-       ipconfig->enabled = FALSE;
+       ipconfig->enabled = false;
        ipconfig->type = CONNMAN_IPCONFIG_TYPE_IPV4;
 
        ipconfig->address = connman_ipaddress_alloc(AF_INET);
-       if (ipconfig->address == NULL) {
+       if (!ipconfig->address) {
                g_free(ipconfig);
                return NULL;
        }
@@ -1193,7 +1241,7 @@ __connman_ipconfig_ref_debug(struct connman_ipconfig *ipconfig,
 void __connman_ipconfig_unref_debug(struct connman_ipconfig *ipconfig,
                                const char *file, int line, const char *caller)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return;
 
        DBG("%p ref %d by %s:%d:%s()", ipconfig, ipconfig->refcount - 1,
@@ -1207,7 +1255,7 @@ void __connman_ipconfig_unref_debug(struct connman_ipconfig *ipconfig,
 
        __connman_ipconfig_set_ops(ipconfig, NULL);
 
-       if (ipconfig->origin != NULL && ipconfig->origin != ipconfig) {
+       if (ipconfig->origin && ipconfig->origin != ipconfig) {
                __connman_ipconfig_unref(ipconfig->origin);
                ipconfig->origin = NULL;
        }
@@ -1215,6 +1263,7 @@ void __connman_ipconfig_unref_debug(struct connman_ipconfig *ipconfig,
        connman_ipaddress_free(ipconfig->system);
        connman_ipaddress_free(ipconfig->address);
        g_free(ipconfig->last_dhcp_address);
+       g_strfreev(ipconfig->last_dhcpv6_prefixes);
        g_free(ipconfig);
 }
 
@@ -1226,7 +1275,7 @@ void __connman_ipconfig_unref_debug(struct connman_ipconfig *ipconfig,
  */
 void *__connman_ipconfig_get_data(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return NULL;
 
        return ipconfig->ops_data;
@@ -1252,40 +1301,16 @@ void __connman_ipconfig_set_data(struct connman_ipconfig *ipconfig, void *data)
  */
 int __connman_ipconfig_get_index(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return -1;
 
-       if (ipconfig->origin != NULL)
+       if (ipconfig->origin)
                return ipconfig->origin->index;
 
        return ipconfig->index;
 }
 
 /**
- * connman_ipconfig_get_ifname:
- * @ipconfig: ipconfig structure
- *
- * Get interface name
- */
-const char *__connman_ipconfig_get_ifname(struct connman_ipconfig *ipconfig)
-{
-       struct connman_ipdevice *ipdevice;
-
-       if (ipconfig == NULL)
-               return NULL;
-
-       if (ipconfig->index < 0)
-               return NULL;
-
-       ipdevice = g_hash_table_lookup(ipdevice_hash,
-                                       GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
-               return NULL;
-
-       return ipdevice->ifname;
-}
-
-/**
  * connman_ipconfig_set_ops:
  * @ipconfig: ipconfig structure
  * @ops: operation callbacks
@@ -1313,9 +1338,10 @@ int __connman_ipconfig_set_method(struct connman_ipconfig *ipconfig,
        return 0;
 }
 
-enum connman_ipconfig_method __connman_ipconfig_get_method(struct connman_ipconfig *ipconfig)
+enum connman_ipconfig_method __connman_ipconfig_get_method(
+                               struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 
        return ipconfig->method;
@@ -1350,7 +1376,7 @@ int __connman_ipconfig_address_remove(struct connman_ipconfig *ipconfig)
 
        DBG("");
 
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return 0;
 
        DBG("method %d", ipconfig->method);
@@ -1378,7 +1404,7 @@ int __connman_ipconfig_address_unset(struct connman_ipconfig *ipconfig)
 
        DBG("");
 
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return 0;
 
        DBG("method %d", ipconfig->method);
@@ -1415,12 +1441,12 @@ int __connman_ipconfig_set_proxy_autoconfig(struct connman_ipconfig *ipconfig,
 
        DBG("ipconfig %p", ipconfig);
 
-       if (ipconfig == NULL || ipconfig->index < 0)
+       if (!ipconfig || ipconfig->index < 0)
                return -ENODEV;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return -ENXIO;
 
        g_free(ipdevice->pac);
@@ -1435,12 +1461,12 @@ const char *__connman_ipconfig_get_proxy_autoconfig(struct connman_ipconfig *ipc
 
        DBG("ipconfig %p", ipconfig);
 
-       if (ipconfig == NULL || ipconfig->index < 0)
+       if (!ipconfig || ipconfig->index < 0)
                return NULL;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return NULL;
 
        return ipdevice->pac;
@@ -1449,7 +1475,7 @@ const char *__connman_ipconfig_get_proxy_autoconfig(struct connman_ipconfig *ipc
 void __connman_ipconfig_set_dhcp_address(struct connman_ipconfig *ipconfig,
                                        const char *address)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return;
 
        g_free(ipconfig->last_dhcp_address);
@@ -1458,47 +1484,74 @@ void __connman_ipconfig_set_dhcp_address(struct connman_ipconfig *ipconfig,
 
 char *__connman_ipconfig_get_dhcp_address(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return NULL;
 
        return ipconfig->last_dhcp_address;
 }
 
+void __connman_ipconfig_set_dhcpv6_prefixes(struct connman_ipconfig *ipconfig,
+                                       char **prefixes)
+{
+       if (!ipconfig)
+               return;
+
+       g_strfreev(ipconfig->last_dhcpv6_prefixes);
+       ipconfig->last_dhcpv6_prefixes = prefixes;
+}
+
+char **__connman_ipconfig_get_dhcpv6_prefixes(struct connman_ipconfig *ipconfig)
+{
+       if (!ipconfig)
+               return NULL;
+
+       return ipconfig->last_dhcpv6_prefixes;
+}
+
 static void disable_ipv6(struct connman_ipconfig *ipconfig)
 {
        struct connman_ipdevice *ipdevice;
+       char *ifname;
 
        DBG("");
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
-       set_ipv6_state(ipdevice->ifname, FALSE);
+       ifname = connman_inet_ifname(ipconfig->index);
+
+       set_ipv6_state(ifname, false);
+
+       g_free(ifname);
 }
 
 static void enable_ipv6(struct connman_ipconfig *ipconfig)
 {
        struct connman_ipdevice *ipdevice;
+       char *ifname;
 
        DBG("");
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
+       ifname = connman_inet_ifname(ipconfig->index);
+
        if (ipconfig->method == CONNMAN_IPCONFIG_METHOD_AUTO)
-               set_ipv6_privacy(ipdevice->ifname,
-                               ipconfig->ipv6_privacy_config);
+               set_ipv6_privacy(ifname, ipconfig->ipv6_privacy_config);
+
+       set_ipv6_state(ifname, true);
 
-       set_ipv6_state(ipdevice->ifname, TRUE);
+       g_free(ifname);
 }
 
 void __connman_ipconfig_enable_ipv6(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL || ipconfig->type != CONNMAN_IPCONFIG_TYPE_IPV6)
+       if (!ipconfig || ipconfig->type != CONNMAN_IPCONFIG_TYPE_IPV6)
                return;
 
        enable_ipv6(ipconfig);
@@ -1506,21 +1559,21 @@ void __connman_ipconfig_enable_ipv6(struct connman_ipconfig *ipconfig)
 
 void __connman_ipconfig_disable_ipv6(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL || ipconfig->type != CONNMAN_IPCONFIG_TYPE_IPV6)
+       if (!ipconfig || ipconfig->type != CONNMAN_IPCONFIG_TYPE_IPV6)
                return;
 
        disable_ipv6(ipconfig);
 }
 
-connman_bool_t __connman_ipconfig_is_usable(struct connman_ipconfig *ipconfig)
+bool __connman_ipconfig_is_usable(struct connman_ipconfig *ipconfig)
 {
-       if (ipconfig == NULL)
-               return FALSE;
+       if (!ipconfig)
+               return false;
 
        switch (ipconfig->method) {
        case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
        case CONNMAN_IPCONFIG_METHOD_OFF:
-               return FALSE;
+               return false;
        case CONNMAN_IPCONFIG_METHOD_AUTO:
        case CONNMAN_IPCONFIG_METHOD_FIXED:
        case CONNMAN_IPCONFIG_METHOD_DHCP:
@@ -1528,24 +1581,25 @@ connman_bool_t __connman_ipconfig_is_usable(struct connman_ipconfig *ipconfig)
                break;
        }
 
-       return TRUE;
+       return true;
 }
 
 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
 {
        struct connman_ipdevice *ipdevice;
-       gboolean up = FALSE, down = FALSE;
-       gboolean lower_up = FALSE, lower_down = FALSE;
+       bool up = false, down = false;
+       bool lower_up = false, lower_down = false;
        enum connman_ipconfig_type type;
+       char *ifname;
 
        DBG("ipconfig %p", ipconfig);
 
-       if (ipconfig == NULL || ipconfig->index < 0)
+       if (!ipconfig || ipconfig->index < 0)
                return -ENODEV;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return -ENXIO;
 
        if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV4) {
@@ -1559,10 +1613,10 @@ int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
        } else
                return -EINVAL;
 
-       ipconfig->enabled = TRUE;
+       ipconfig->enabled = true;
 
        if (type == CONNMAN_IPCONFIG_TYPE_IPV4 &&
-                                       ipdevice->config_ipv4 != NULL) {
+                                       ipdevice->config_ipv4) {
                ipconfig_list = g_list_remove(ipconfig_list,
                                                        ipdevice->config_ipv4);
 
@@ -1572,7 +1626,7 @@ int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
        }
 
        if (type == CONNMAN_IPCONFIG_TYPE_IPV6 &&
-                                       ipdevice->config_ipv6 != NULL) {
+                                       ipdevice->config_ipv6) {
                ipconfig_list = g_list_remove(ipconfig_list,
                                                        ipdevice->config_ipv6);
 
@@ -1591,25 +1645,29 @@ int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
        ipconfig_list = g_list_append(ipconfig_list, ipconfig);
 
        if (ipdevice->flags & IFF_UP)
-               up = TRUE;
+               up = true;
        else
-               down = TRUE;
+               down = true;
 
        if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) ==
                        (IFF_RUNNING | IFF_LOWER_UP))
-               lower_up = TRUE;
+               lower_up = true;
        else if ((ipdevice->flags & (IFF_RUNNING | IFF_LOWER_UP)) == 0)
-               lower_down = TRUE;
+               lower_down = true;
 
-       if (up == TRUE && ipconfig->ops->up)
-               ipconfig->ops->up(ipconfig);
-       if (lower_up == TRUE && ipconfig->ops->lower_up)
-               ipconfig->ops->lower_up(ipconfig);
+       ifname = connman_inet_ifname(ipconfig->index);
 
-       if (lower_down == TRUE && ipconfig->ops->lower_down)
-               ipconfig->ops->lower_down(ipconfig);
-       if (down == TRUE && ipconfig->ops->down)
-               ipconfig->ops->down(ipconfig);
+       if (up && ipconfig->ops->up)
+               ipconfig->ops->up(ipconfig, ifname);
+       if (lower_up && ipconfig->ops->lower_up)
+               ipconfig->ops->lower_up(ipconfig, ifname);
+
+       if (lower_down && ipconfig->ops->lower_down)
+               ipconfig->ops->lower_down(ipconfig, ifname);
+       if (down && ipconfig->ops->down)
+               ipconfig->ops->down(ipconfig, ifname);
+
+       g_free(ifname);
 
        return 0;
 }
@@ -1620,18 +1678,18 @@ int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
 
        DBG("ipconfig %p", ipconfig);
 
-       if (ipconfig == NULL || ipconfig->index < 0)
+       if (!ipconfig || ipconfig->index < 0)
                return -ENODEV;
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return -ENXIO;
 
-       if (ipdevice->config_ipv4 == NULL && ipdevice->config_ipv6 == NULL)
+       if (!ipdevice->config_ipv4 && !ipdevice->config_ipv6)
                return -EINVAL;
 
-       ipconfig->enabled = FALSE;
+       ipconfig->enabled = false;
 
        if (ipdevice->config_ipv4 == ipconfig) {
                ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
@@ -1700,10 +1758,8 @@ static const char *privacy2string(int privacy)
                return "disabled";
        else if (privacy == 1)
                return "enabled";
-       else if (privacy > 1)
+       else
                return "prefered";
-
-       return "disabled";
 }
 
 static int string2privacy(const char *privacy)
@@ -1712,6 +1768,8 @@ static int string2privacy(const char *privacy)
                return 0;
        else if (g_strcmp0(privacy, "enabled") == 0)
                return 1;
+       else if (g_strcmp0(privacy, "preferred") == 0)
+               return 2;
        else if (g_strcmp0(privacy, "prefered") == 0)
                return 2;
        else
@@ -1723,7 +1781,7 @@ int __connman_ipconfig_ipv6_set_privacy(struct connman_ipconfig *ipconfig,
 {
        int privacy;
 
-       if (ipconfig == NULL)
+       if (!ipconfig)
                return -EINVAL;
 
        DBG("ipconfig %p privacy %s", ipconfig, value);
@@ -1749,7 +1807,7 @@ void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
                return;
 
        str = __connman_ipconfig_method2string(ipconfig->method);
-       if (str == NULL)
+       if (!str)
                return;
 
        connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
@@ -1770,10 +1828,10 @@ void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
                break;
        }
 
-       if (append_addr == NULL)
+       if (!append_addr)
                return;
 
-       if (append_addr->local != NULL) {
+       if (append_addr->local) {
                in_addr_t addr;
                struct in_addr netmask;
                char *mask;
@@ -1788,7 +1846,7 @@ void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
                                                DBUS_TYPE_STRING, &mask);
        }
 
-       if (append_addr->gateway != NULL)
+       if (append_addr->gateway)
                connman_dbus_dict_append_basic(iter, "Gateway",
                                DBUS_TYPE_STRING, &append_addr->gateway);
 }
@@ -1806,10 +1864,10 @@ void __connman_ipconfig_append_ipv6(struct connman_ipconfig *ipconfig,
                return;
 
        str = __connman_ipconfig_method2string(ipconfig->method);
-       if (str == NULL)
+       if (!str)
                return;
 
-       if (ipconfig_ipv4 != NULL &&
+       if (ipconfig_ipv4 &&
                        ipconfig->method == CONNMAN_IPCONFIG_METHOD_AUTO) {
                if (__connman_6to4_check(ipconfig_ipv4) == 1)
                        str = "6to4";
@@ -1833,10 +1891,10 @@ void __connman_ipconfig_append_ipv6(struct connman_ipconfig *ipconfig,
                break;
        }
 
-       if (append_addr == NULL)
+       if (!append_addr)
                return;
 
-       if (append_addr->local != NULL) {
+       if (append_addr->local) {
                connman_dbus_dict_append_basic(iter, "Address",
                                DBUS_TYPE_STRING, &append_addr->local);
                connman_dbus_dict_append_basic(iter, "PrefixLength",
@@ -1844,7 +1902,7 @@ void __connman_ipconfig_append_ipv6(struct connman_ipconfig *ipconfig,
                                                &append_addr->prefixlen);
        }
 
-       if (append_addr->gateway != NULL)
+       if (append_addr->gateway)
                connman_dbus_dict_append_basic(iter, "Gateway",
                                DBUS_TYPE_STRING, &append_addr->gateway);
 
@@ -1861,7 +1919,7 @@ void __connman_ipconfig_append_ipv6config(struct connman_ipconfig *ipconfig,
        DBG("");
 
        str = __connman_ipconfig_method2string(ipconfig->method);
-       if (str == NULL)
+       if (!str)
                return;
 
        connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
@@ -1877,10 +1935,10 @@ void __connman_ipconfig_append_ipv6config(struct connman_ipconfig *ipconfig,
                break;
        }
 
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
 
-       if (ipconfig->address->local != NULL) {
+       if (ipconfig->address->local) {
                connman_dbus_dict_append_basic(iter, "Address",
                                DBUS_TYPE_STRING, &ipconfig->address->local);
                connman_dbus_dict_append_basic(iter, "PrefixLength",
@@ -1888,7 +1946,7 @@ void __connman_ipconfig_append_ipv6config(struct connman_ipconfig *ipconfig,
                                                &ipconfig->address->prefixlen);
        }
 
-       if (ipconfig->address->gateway != NULL)
+       if (ipconfig->address->gateway)
                connman_dbus_dict_append_basic(iter, "Gateway",
                                DBUS_TYPE_STRING, &ipconfig->address->gateway);
 
@@ -1905,7 +1963,7 @@ void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
        DBG("");
 
        str = __connman_ipconfig_method2string(ipconfig->method);
-       if (str == NULL)
+       if (!str)
                return;
 
        connman_dbus_dict_append_basic(iter, "Method", DBUS_TYPE_STRING, &str);
@@ -1921,10 +1979,10 @@ void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
                break;
        }
 
-       if (ipconfig->address == NULL)
+       if (!ipconfig->address)
                return;
 
-       if (ipconfig->address->local != NULL) {
+       if (ipconfig->address->local) {
                in_addr_t addr;
                struct in_addr netmask;
                char *mask;
@@ -1939,7 +1997,7 @@ void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
                                                DBUS_TYPE_STRING, &mask);
        }
 
-       if (ipconfig->address->gateway != NULL)
+       if (ipconfig->address->gateway)
                connman_dbus_dict_append_basic(iter, "Gateway",
                                DBUS_TYPE_STRING, &ipconfig->address->gateway);
 }
@@ -1981,7 +2039,7 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
 
                type = dbus_message_iter_get_arg_type(&value);
 
-               if (g_str_equal(key, "Method") == TRUE) {
+               if (g_str_equal(key, "Method")) {
                        const char *str;
 
                        if (type != DBUS_TYPE_STRING)
@@ -1989,12 +2047,12 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
 
                        dbus_message_iter_get_basic(&value, &str);
                        method = __connman_ipconfig_string2method(str);
-               } else if (g_str_equal(key, "Address") == TRUE) {
+               } else if (g_str_equal(key, "Address")) {
                        if (type != DBUS_TYPE_STRING)
                                return -EINVAL;
 
                        dbus_message_iter_get_basic(&value, &address);
-               } else if (g_str_equal(key, "PrefixLength") == TRUE) {
+               } else if (g_str_equal(key, "PrefixLength")) {
                        if (type != DBUS_TYPE_BYTE)
                                return -EINVAL;
 
@@ -2002,17 +2060,17 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
 
                        if (prefix_length < 0 || prefix_length > 128)
                                return -EINVAL;
-               } else if (g_str_equal(key, "Netmask") == TRUE) {
+               } else if (g_str_equal(key, "Netmask")) {
                        if (type != DBUS_TYPE_STRING)
                                return -EINVAL;
 
                        dbus_message_iter_get_basic(&value, &netmask);
-               } else if (g_str_equal(key, "Gateway") == TRUE) {
+               } else if (g_str_equal(key, "Gateway")) {
                        if (type != DBUS_TYPE_STRING)
                                return -EINVAL;
 
                        dbus_message_iter_get_basic(&value, &gateway);
-               } else if (g_str_equal(key, "Privacy") == TRUE) {
+               } else if (g_str_equal(key, "Privacy")) {
                        if (type != DBUS_TYPE_STRING)
                                return -EINVAL;
 
@@ -2044,7 +2102,7 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
                        return -EOPNOTSUPP;
 
                ipconfig->method = method;
-               if (privacy_string != NULL)
+               if (privacy_string)
                        ipconfig->ipv6_privacy_config = privacy;
                enable_ipv6(ipconfig);
                break;
@@ -2062,12 +2120,12 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
                        break;
                }
 
-               if ((address != NULL && connman_inet_check_ipaddress(address)
+               if ((address && connman_inet_check_ipaddress(address)
                                                != type) ||
-                               (netmask != NULL &&
+                               (netmask &&
                                connman_inet_check_ipaddress(netmask)
                                                != type) ||
-                               (gateway != NULL &&
+                               (gateway &&
                                connman_inet_check_ipaddress(gateway)
                                                != type))
                        return -EINVAL;
@@ -2105,14 +2163,17 @@ void __connman_ipconfig_append_ethernet(struct connman_ipconfig *ipconfig,
 
        ipdevice = g_hash_table_lookup(ipdevice_hash,
                                        GINT_TO_POINTER(ipconfig->index));
-       if (ipdevice == NULL)
+       if (!ipdevice)
                return;
 
-       if (ipdevice->ifname != NULL)
+       if (ipconfig->index >= 0) {
+               char *ifname = connman_inet_ifname(ipconfig->index);
                connman_dbus_dict_append_basic(iter, "Interface",
-                                       DBUS_TYPE_STRING, &ipdevice->ifname);
+                                       DBUS_TYPE_STRING, &ifname);
+               g_free(ifname);
+       }
 
-       if (ipdevice->address != NULL)
+       if (ipdevice->address)
                connman_dbus_dict_append_basic(iter, "Address",
                                        DBUS_TYPE_STRING, &ipdevice->address);
 
@@ -2132,7 +2193,7 @@ int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
 
        key = g_strdup_printf("%smethod", prefix);
        method = g_key_file_get_string(keyfile, identifier, key, NULL);
-       if (method == NULL) {
+       if (!method) {
                switch (ipconfig->type) {
                case CONNMAN_IPCONFIG_TYPE_IPV4:
                        ipconfig->method = CONNMAN_IPCONFIG_METHOD_DHCP;
@@ -2151,16 +2212,30 @@ int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
                ipconfig->method = CONNMAN_IPCONFIG_METHOD_OFF;
 
        if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6) {
+               gsize length;
+               char *pprefix;
+
                if (ipconfig->method == CONNMAN_IPCONFIG_METHOD_AUTO ||
                        ipconfig->method == CONNMAN_IPCONFIG_METHOD_MANUAL) {
                        char *privacy;
-                       char *pprefix = g_strdup_printf("%sprivacy", prefix);
+
+                       pprefix = g_strdup_printf("%sprivacy", prefix);
                        privacy = g_key_file_get_string(keyfile, identifier,
                                                        pprefix, NULL);
                        ipconfig->ipv6_privacy_config = string2privacy(privacy);
                        g_free(pprefix);
                        g_free(privacy);
                }
+
+               pprefix = g_strdup_printf("%sDHCP.LastPrefixes", prefix);
+               ipconfig->last_dhcpv6_prefixes =
+                       g_key_file_get_string_list(keyfile, identifier, pprefix,
+                                               &length, NULL);
+               if (ipconfig->last_dhcpv6_prefixes && length == 0) {
+                       g_free(ipconfig->last_dhcpv6_prefixes);
+                       ipconfig->last_dhcpv6_prefixes = NULL;
+               }
+               g_free(pprefix);
        }
 
        g_free(method);
@@ -2172,28 +2247,32 @@ int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
        g_free(key);
 
        key = g_strdup_printf("%slocal_address", prefix);
+       g_free(ipconfig->address->local);
        ipconfig->address->local = g_key_file_get_string(
                        keyfile, identifier, key, NULL);
        g_free(key);
 
        key = g_strdup_printf("%speer_address", prefix);
+       g_free(ipconfig->address->peer);
        ipconfig->address->peer = g_key_file_get_string(
                                keyfile, identifier, key, NULL);
        g_free(key);
 
        key = g_strdup_printf("%sbroadcast_address", prefix);
+       g_free(ipconfig->address->broadcast);
        ipconfig->address->broadcast = g_key_file_get_string(
                                keyfile, identifier, key, NULL);
        g_free(key);
 
        key = g_strdup_printf("%sgateway", prefix);
+       g_free(ipconfig->address->gateway);
        ipconfig->address->gateway = g_key_file_get_string(
                                keyfile, identifier, key, NULL);
        g_free(key);
 
        key = g_strdup_printf("%sDHCP.LastAddress", prefix);
        str = g_key_file_get_string(keyfile, identifier, key, NULL);
-       if (str != NULL) {
+       if (str) {
                g_free(ipconfig->last_dhcp_address);
                ipconfig->last_dhcp_address = str;
        }
@@ -2208,13 +2287,15 @@ int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
        const char *method;
        char *key;
 
-       DBG("ipconfig %p identifier %s", ipconfig, identifier);
-
        method = __connman_ipconfig_method2string(ipconfig->method);
 
-       key = g_strdup_printf("%smethod", prefix);
-       g_key_file_set_string(keyfile, identifier, key, method);
-       g_free(key);
+       DBG("ipconfig %p identifier %s method %s", ipconfig, identifier,
+                                                               method);
+       if (method) {
+               key = g_strdup_printf("%smethod", prefix);
+               g_key_file_set_string(keyfile, identifier, key, method);
+               g_free(key);
+       }
 
        if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6) {
                const char *privacy;
@@ -2224,13 +2305,26 @@ int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
                g_free(key);
 
                key = g_strdup_printf("%sDHCP.LastAddress", prefix);
-               if (ipconfig->last_dhcp_address != NULL &&
+               if (ipconfig->last_dhcp_address &&
                                strlen(ipconfig->last_dhcp_address) > 0)
                        g_key_file_set_string(keyfile, identifier, key,
                                        ipconfig->last_dhcp_address);
                else
                        g_key_file_remove_key(keyfile, identifier, key, NULL);
                g_free(key);
+
+               key = g_strdup_printf("%sDHCP.LastPrefixes", prefix);
+               if (ipconfig->last_dhcpv6_prefixes &&
+                               ipconfig->last_dhcpv6_prefixes[0]) {
+                       guint len =
+                               g_strv_length(ipconfig->last_dhcpv6_prefixes);
+
+                       g_key_file_set_string_list(keyfile, identifier, key,
+                               (const gchar **)ipconfig->last_dhcpv6_prefixes,
+                                               len);
+               } else
+                       g_key_file_remove_key(keyfile, identifier, key, NULL);
+               g_free(key);
        }
 
        switch (ipconfig->method) {
@@ -2239,7 +2333,7 @@ int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
                break;
        case CONNMAN_IPCONFIG_METHOD_DHCP:
                key = g_strdup_printf("%sDHCP.LastAddress", prefix);
-               if (ipconfig->last_dhcp_address != NULL &&
+               if (ipconfig->last_dhcp_address &&
                                strlen(ipconfig->last_dhcp_address) > 0)
                        g_key_file_set_string(keyfile, identifier, key,
                                        ipconfig->last_dhcp_address);
@@ -2260,25 +2354,25 @@ int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
        g_free(key);
 
        key = g_strdup_printf("%slocal_address", prefix);
-       if (ipconfig->address->local != NULL)
+       if (ipconfig->address->local)
                g_key_file_set_string(keyfile, identifier,
                                key, ipconfig->address->local);
        g_free(key);
 
        key = g_strdup_printf("%speer_address", prefix);
-       if (ipconfig->address->peer != NULL)
+       if (ipconfig->address->peer)
                g_key_file_set_string(keyfile, identifier,
                                key, ipconfig->address->peer);
        g_free(key);
 
        key = g_strdup_printf("%sbroadcast_address", prefix);
-       if (ipconfig->address->broadcast != NULL)
+       if (ipconfig->address->broadcast)
                g_key_file_set_string(keyfile, identifier,
                        key, ipconfig->address->broadcast);
        g_free(key);
 
        key = g_strdup_printf("%sgateway", prefix);
-       if (ipconfig->address->gateway != NULL)
+       if (ipconfig->address->gateway)
                g_key_file_set_string(keyfile, identifier,
                        key, ipconfig->address->gateway);
        g_free(key);