gweb: added the capability to restrict the requests to a specific address family.
[platform/upstream/connman.git] / src / inet.c
index 97a6592..e3adb7e 100644 (file)
@@ -2,7 +2,9 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2009  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2003-2005  Go-Core Project
+ *  Copyright (C) 2003-2006  Helsinki University of Technology
  *
  *  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
 #include <config.h>
 #endif
 
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <linux/sockios.h>
+#include <arpa/inet.h>
+#include <net/route.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <netinet/icmp6.h>
+#include <fcntl.h>
+#include <linux/if_tun.h>
+
 #include "connman.h"
+
+#define NLMSG_TAIL(nmsg)                               \
+       ((struct rtattr *) (((uint8_t*) (nmsg)) +       \
+       NLMSG_ALIGN((nmsg)->nlmsg_len)))
+
+static int add_rtattr(struct nlmsghdr *n, size_t max_length, int type,
+                               const void *data, size_t data_length)
+{
+       size_t length;
+       struct rtattr *rta;
+
+       length = RTA_LENGTH(data_length);
+
+       if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length) > max_length)
+               return -E2BIG;
+
+       rta = NLMSG_TAIL(n);
+       rta->rta_type = type;
+       rta->rta_len = length;
+       memcpy(RTA_DATA(rta), data, data_length);
+       n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(length);
+
+       return 0;
+}
+
+int __connman_inet_modify_address(int cmd, int flags,
+                               int index, int family,
+                               const char *address,
+                               const char *peer,
+                               unsigned char prefixlen,
+                               const char *broadcast)
+{
+       uint8_t request[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
+                       NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
+                       RTA_LENGTH(sizeof(struct in6_addr)) +
+                       RTA_LENGTH(sizeof(struct in6_addr))];
+
+       struct nlmsghdr *header;
+       struct sockaddr_nl nl_addr;
+       struct ifaddrmsg *ifaddrmsg;
+       struct in6_addr ipv6_addr;
+       struct in_addr ipv4_addr, ipv4_dest, ipv4_bcast;
+       int sk, err;
+
+       DBG("cmd %#x flags %#x index %d family %d address %s peer %s "
+               "prefixlen %hhu broadcast %s", cmd, flags, index, family,
+               address, peer, prefixlen, broadcast);
+
+       if (address == NULL)
+               return -EINVAL;
+
+       if (family != AF_INET && family != AF_INET6)
+               return -EINVAL;
+
+       memset(&request, 0, sizeof(request));
+
+       header = (struct nlmsghdr *)request;
+       header->nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+       header->nlmsg_type = cmd;
+       header->nlmsg_flags = NLM_F_REQUEST | flags;
+       header->nlmsg_seq = 1;
+
+       ifaddrmsg = NLMSG_DATA(header);
+       ifaddrmsg->ifa_family = family;
+       ifaddrmsg->ifa_prefixlen = prefixlen;
+       ifaddrmsg->ifa_flags = IFA_F_PERMANENT;
+       ifaddrmsg->ifa_scope = RT_SCOPE_UNIVERSE;
+       ifaddrmsg->ifa_index = index;
+
+       if (family == AF_INET) {
+               if (inet_pton(AF_INET, address, &ipv4_addr) < 1)
+                       return -1;
+
+               if (broadcast != NULL)
+                       inet_pton(AF_INET, broadcast, &ipv4_bcast);
+               else
+                       ipv4_bcast.s_addr = ipv4_addr.s_addr |
+                               htonl(0xfffffffflu >> prefixlen);
+
+               if (peer != NULL) {
+                       if (inet_pton(AF_INET, peer, &ipv4_dest) < 1)
+                               return -1;
+
+                       if ((err = add_rtattr(header, sizeof(request),
+                                       IFA_ADDRESS,
+                                       &ipv4_dest, sizeof(ipv4_dest))) < 0)
+                       return err;
+               }
+
+               if ((err = add_rtattr(header, sizeof(request), IFA_LOCAL,
+                               &ipv4_addr, sizeof(ipv4_addr))) < 0)
+                       return err;
+
+               if ((err = add_rtattr(header, sizeof(request), IFA_BROADCAST,
+                               &ipv4_bcast, sizeof(ipv4_bcast))) < 0)
+                       return err;
+
+       } else if (family == AF_INET6) {
+               if (inet_pton(AF_INET6, address, &ipv6_addr) < 1)
+                       return -1;
+
+               if ((err = add_rtattr(header, sizeof(request), IFA_LOCAL,
+                               &ipv6_addr, sizeof(ipv6_addr))) < 0)
+                       return err;
+       }
+
+       sk = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
+       if (sk < 0)
+               return -errno;
+
+       memset(&nl_addr, 0, sizeof(nl_addr));
+       nl_addr.nl_family = AF_NETLINK;
+
+       if ((err = sendto(sk, request, header->nlmsg_len, 0,
+                       (struct sockaddr *) &nl_addr, sizeof(nl_addr))) < 0)
+               goto done;
+
+       err = 0;
+
+done:
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_ifindex(const char *name)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       if (name == NULL)
+               return -1;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+
+       err = ioctl(sk, SIOCGIFINDEX, &ifr);
+
+       close(sk);
+
+       if (err < 0)
+               return -1;
+
+       return ifr.ifr_ifindex;
+}
+
+char *connman_inet_ifname(int index)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       if (index < 0)
+               return NULL;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return NULL;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+
+       close(sk);
+
+       if (err < 0)
+               return NULL;
+
+       return strdup(ifr.ifr_name);
+}
+
+short int connman_inet_ifflags(int index)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -errno;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       err = ifr.ifr_flags;
+
+done:
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_ifup(int index)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -errno;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       if (ifr.ifr_flags & IFF_UP) {
+               err = -EALREADY;
+               goto done;
+       }
+
+       ifr.ifr_flags |= IFF_UP;
+
+       if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       err = 0;
+
+done:
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_ifdown(int index)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -errno;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
+               err = -errno;
+               goto done;
+       }
+
+       if (!(ifr.ifr_flags & IFF_UP)) {
+               err = -EALREADY;
+               goto done;
+       }
+
+       ifr.ifr_flags &= ~IFF_UP;
+
+       if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
+               err = -errno;
+       else
+               err = 0;
+
+done:
+       close(sk);
+
+       return err;
+}
+
+static char *index2addr(int index)
+{
+       struct ifreq ifr;
+       struct ether_addr eth;
+       char *str;
+       int sk, err;
+
+       if (index < 0)
+               return NULL;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return NULL;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+
+       if (err == 0)
+               err = ioctl(sk, SIOCGIFHWADDR, &ifr);
+
+       close(sk);
+
+       if (err < 0)
+               return NULL;
+
+       str = malloc(18);
+       if (!str)
+               return NULL;
+
+       memcpy(&eth, &ifr.ifr_hwaddr.sa_data, sizeof(eth));
+       snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
+                                               eth.ether_addr_octet[0],
+                                               eth.ether_addr_octet[1],
+                                               eth.ether_addr_octet[2],
+                                               eth.ether_addr_octet[3],
+                                               eth.ether_addr_octet[4],
+                                               eth.ether_addr_octet[5]);
+
+       return str;
+}
+
+static char *index2ident(int index, const char *prefix)
+{
+       struct ifreq ifr;
+       struct ether_addr eth;
+       char *str;
+       int sk, err, len;
+
+       if (index < 0)
+               return NULL;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return NULL;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+
+       if (err == 0)
+               err = ioctl(sk, SIOCGIFHWADDR, &ifr);
+
+       close(sk);
+
+       if (err < 0)
+               return NULL;
+
+       len = prefix ? strlen(prefix) + 18 : 18;
+
+       str = malloc(len);
+       if (!str)
+               return NULL;
+
+       memcpy(&eth, &ifr.ifr_hwaddr.sa_data, sizeof(eth));
+       snprintf(str, len, "%s%02x%02x%02x%02x%02x%02x",
+                                               prefix ? prefix : "",
+                                               eth.ether_addr_octet[0],
+                                               eth.ether_addr_octet[1],
+                                               eth.ether_addr_octet[2],
+                                               eth.ether_addr_octet[3],
+                                               eth.ether_addr_octet[4],
+                                               eth.ether_addr_octet[5]);
+
+       return str;
+}
+
+connman_bool_t connman_inet_is_cfg80211(int index)
+{
+       connman_bool_t result = FALSE;
+       char phy80211_path[PATH_MAX];
+       struct stat st;
+       struct ifreq ifr;
+       int sk;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return FALSE;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0)
+               goto done;
+
+       snprintf(phy80211_path, PATH_MAX,
+                               "/sys/class/net/%s/phy80211", ifr.ifr_name);
+
+       if (stat(phy80211_path, &st) == 0 && (st.st_mode & S_IFDIR))
+               result = TRUE;
+
+done:
+       close(sk);
+
+       return result;
+}
+
+struct connman_device *connman_inet_create_device(int index)
+{
+       enum connman_device_type type;
+       struct connman_device *device;
+       char *devname, *ident = NULL;
+       char *addr = NULL, *name = NULL;
+
+       if (index < 0)
+               return NULL;
+
+       devname = connman_inet_ifname(index);
+       if (devname == NULL)
+               return NULL;
+
+       if (__connman_device_isfiltered(devname) == TRUE) {
+               connman_info("Ignoring interface %s (filtered)", devname);
+               free(devname);
+               return NULL;
+       }
+
+       type = __connman_rtnl_get_device_type(index);
+
+       switch (type) {
+       case CONNMAN_DEVICE_TYPE_UNKNOWN:
+               connman_info("Ignoring interface %s (type unknown)", devname);
+               free(devname);
+               return NULL;
+       case CONNMAN_DEVICE_TYPE_ETHERNET:
+       case CONNMAN_DEVICE_TYPE_GADGET:
+       case CONNMAN_DEVICE_TYPE_WIFI:
+       case CONNMAN_DEVICE_TYPE_WIMAX:
+               name = index2ident(index, "");
+               addr = index2addr(index);
+               break;
+       case CONNMAN_DEVICE_TYPE_BLUETOOTH:
+       case CONNMAN_DEVICE_TYPE_CELLULAR:
+       case CONNMAN_DEVICE_TYPE_GPS:
+       case CONNMAN_DEVICE_TYPE_VENDOR:
+               name = strdup(devname);
+               break;
+       }
+
+       device = connman_device_create(name, type);
+       if (device == NULL)
+               goto done;
+
+       switch (type) {
+       case CONNMAN_DEVICE_TYPE_UNKNOWN:
+       case CONNMAN_DEVICE_TYPE_VENDOR:
+       case CONNMAN_DEVICE_TYPE_GPS:
+               break;
+       case CONNMAN_DEVICE_TYPE_ETHERNET:
+       case CONNMAN_DEVICE_TYPE_GADGET:
+               ident = index2ident(index, NULL);
+               break;
+       case CONNMAN_DEVICE_TYPE_WIFI:
+       case CONNMAN_DEVICE_TYPE_WIMAX:
+               ident = index2ident(index, NULL);
+               break;
+       case CONNMAN_DEVICE_TYPE_BLUETOOTH:
+               break;
+       case CONNMAN_DEVICE_TYPE_CELLULAR:
+               ident = index2ident(index, NULL);
+               break;
+       }
+
+       connman_device_set_index(device, index);
+       connman_device_set_interface(device, devname);
+
+       if (ident != NULL) {
+               connman_device_set_ident(device, ident);
+               free(ident);
+       }
+
+       connman_device_set_string(device, "Address", addr);
+
+done:
+       free(devname);
+       free(name);
+       free(addr);
+
+       return device;
+}
+
+struct in6_ifreq {
+       struct in6_addr ifr6_addr;
+       __u32 ifr6_prefixlen;
+       unsigned int ifr6_ifindex;
+};
+
+int connman_inet_set_ipv6_address(int index,
+               struct connman_ipaddress *ipaddress)
+{
+       int err;
+       unsigned char prefix_len;
+       const char *address;
+
+       if (ipaddress->local == NULL)
+               return 0;
+
+       prefix_len = ipaddress->prefixlen;
+       address = ipaddress->local;
+
+       DBG("index %d address %s prefix_len %d", index, address, prefix_len);
+
+       err = __connman_inet_modify_address(RTM_NEWADDR,
+                               NLM_F_REPLACE | NLM_F_ACK, index, AF_INET6,
+                               address, NULL, prefix_len, NULL);
+       if (err < 0) {
+               connman_error("%s: %s", __func__, strerror(-err));
+               return err;
+       }
+
+       return 0;
+}
+
+int connman_inet_set_address(int index, struct connman_ipaddress *ipaddress)
+{
+       int err;
+       unsigned char prefix_len;
+       const char *address, *broadcast, *peer;
+
+       if (ipaddress->local == NULL)
+               return -1;
+
+       prefix_len = ipaddress->prefixlen;
+       address = ipaddress->local;
+       broadcast = ipaddress->broadcast;
+       peer = ipaddress->peer;
+
+       DBG("index %d address %s prefix_len %d", index, address, prefix_len);
+
+       err = __connman_inet_modify_address(RTM_NEWADDR,
+                               NLM_F_REPLACE | NLM_F_ACK, index, AF_INET,
+                               address, peer, prefix_len, broadcast);
+       if (err < 0) {
+               connman_error("%s: %s", __func__, strerror(-err));
+               return err;
+       }
+
+       return 0;
+}
+
+int connman_inet_clear_ipv6_address(int index, const char *address,
+                                                       int prefix_len)
+{
+       int err;
+
+       DBG("index %d address %s prefix_len %d", index, address, prefix_len);
+
+       err = __connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET6,
+                               address, NULL, prefix_len, NULL);
+       if (err < 0) {
+               connman_error("%s: %s", __func__, strerror(-err));
+               return err;
+       }
+
+       return 0;
+}
+
+int connman_inet_clear_address(int index, struct connman_ipaddress *ipaddress)
+{
+       int err;
+       unsigned char prefix_len;
+       const char *address, *broadcast, *peer;
+
+       prefix_len = ipaddress->prefixlen;
+       address = ipaddress->local;
+       broadcast = ipaddress->broadcast;
+       peer = ipaddress->peer;
+
+       DBG("index %d address %s prefix_len %d", index, address, prefix_len);
+
+       err = __connman_inet_modify_address(RTM_DELADDR, 0, index, AF_INET,
+                               address, peer, prefix_len, broadcast);
+       if (err < 0) {
+               connman_error("%s: %s", __func__, strerror(-err));
+               return err;
+       }
+
+       return 0;
+}
+
+int connman_inet_add_host_route(int index, const char *host,
+                               const char *gateway)
+{
+       return connman_inet_add_network_route(index, host, gateway, NULL);
+}
+
+int connman_inet_del_host_route(int index, const char *host)
+{
+       return connman_inet_del_network_route(index, host);
+}
+
+int connman_inet_add_network_route(int index, const char *host,
+                                       const char *gateway,
+                                       const char *netmask)
+{
+       struct ifreq ifr;
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk, err;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return -1;
+       }
+
+       DBG("ifname %s", ifr.ifr_name);
+
+       memset(&rt, 0, sizeof(rt));
+       rt.rt_flags = RTF_UP;
+       if (gateway != NULL)
+               rt.rt_flags |= RTF_GATEWAY;
+       if (netmask == NULL)
+               rt.rt_flags |= RTF_HOST;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = inet_addr(host);
+       memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       if (gateway != NULL)
+               addr.sin_addr.s_addr = inet_addr(gateway);
+       else
+               addr.sin_addr.s_addr = INADDR_ANY;
+       memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+       if (netmask != NULL)
+               addr.sin_addr.s_addr = inet_addr(netmask);
+       else
+               addr.sin_addr.s_addr = INADDR_ANY;
+       memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
+
+       rt.rt_dev = ifr.ifr_name;
+
+       err = ioctl(sk, SIOCADDRT, &rt);
+       if (err < 0)
+               connman_error("Adding host route failed (%s)",
+                                                       strerror(errno));
+
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_del_network_route(int index, const char *host)
+{
+       struct ifreq ifr;
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk, err;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return -1;
+       }
+
+       DBG("ifname %s", ifr.ifr_name);
+
+       memset(&rt, 0, sizeof(rt));
+       rt.rt_flags = RTF_UP | RTF_HOST;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = inet_addr(host);
+       memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+
+       rt.rt_dev = ifr.ifr_name;
+
+       err = ioctl(sk, SIOCDELRT, &rt);
+       if (err < 0)
+               connman_error("Deleting host route failed (%s)",
+                                                       strerror(errno));
+
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_del_ipv6_network_route(int index, const char *host,
+                                               unsigned char prefix_len)
+{
+       struct in6_rtmsg rt;
+       int sk, err;
+
+       DBG("index %d host %s", index, host);
+
+       if (host == NULL)
+               return -EINVAL;
+
+       memset(&rt, 0, sizeof(rt));
+
+       rt.rtmsg_dst_len = prefix_len;
+
+       err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
+       if (err < 0)
+               goto out;
+
+       rt.rtmsg_flags = RTF_UP | RTF_HOST;
+
+       rt.rtmsg_metric = 1;
+       rt.rtmsg_ifindex = index;
+
+       sk = socket(AF_INET6, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               err = -1;
+               goto out;
+       }
+
+       err = ioctl(sk, SIOCDELRT, &rt);
+       close(sk);
+out:
+       if (err < 0)
+               connman_error("Del IPv6 host route error");
+
+       return err;
+}
+
+int connman_inet_del_ipv6_host_route(int index, const char *host)
+{
+       return connman_inet_del_ipv6_network_route(index, host, 128);
+}
+
+int connman_inet_add_ipv6_network_route(int index, const char *host,
+                                       const char *gateway,
+                                               unsigned char prefix_len)
+{
+       struct in6_rtmsg rt;
+       int sk, err;
+
+       DBG("index %d host %s gateway %s", index, host, gateway);
+
+       if (host == NULL)
+               return -EINVAL;
+
+       memset(&rt, 0, sizeof(rt));
+
+       rt.rtmsg_dst_len = prefix_len;
+
+       err = inet_pton(AF_INET6, host, &rt.rtmsg_dst);
+       if (err < 0)
+               goto out;
+
+       rt.rtmsg_flags = RTF_UP | RTF_HOST;
+
+       if (gateway != NULL) {
+               rt.rtmsg_flags |= RTF_GATEWAY;
+               inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
+       }
+
+       rt.rtmsg_metric = 1;
+       rt.rtmsg_ifindex = index;
+
+       sk = socket(AF_INET6, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               err = -1;
+               goto out;
+       }
+
+       err = ioctl(sk, SIOCADDRT, &rt);
+       close(sk);
+out:
+       if (err < 0)
+               connman_error("Set IPv6 host route error");
+
+       return err;
+}
+
+int connman_inet_add_ipv6_host_route(int index, const char *host,
+                                       const char *gateway)
+{
+       return connman_inet_add_ipv6_network_route(index, host, gateway, 128);
+}
+
+int connman_inet_set_ipv6_gateway_address(int index, const char *gateway)
+{
+       struct in6_rtmsg rt;
+       int sk, err;
+
+       DBG("index %d, gateway %s", index, gateway);
+
+       if (gateway == NULL)
+               return -EINVAL;
+
+       memset(&rt, 0, sizeof(rt));
+
+       err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
+       if (err < 0)
+               goto out;
+
+       rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
+       rt.rtmsg_metric = 1;
+       rt.rtmsg_dst_len = 0;
+       rt.rtmsg_ifindex = index;
+
+       sk = socket(AF_INET6, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               err = -1;
+               goto out;
+       }
+
+       err = ioctl(sk, SIOCADDRT, &rt);
+       close(sk);
+out:
+       if (err < 0)
+               connman_error("Set default IPv6 gateway error");
+
+       return err;
+}
+
+int connman_inet_clear_ipv6_gateway_address(int index, const char *gateway)
+{
+       struct in6_rtmsg rt;
+       int sk, err;
+
+       DBG("index %d, gateway %s", index, gateway);
+
+       if (gateway == NULL)
+               return -EINVAL;
+
+       memset(&rt, 0, sizeof(rt));
+
+       err = inet_pton(AF_INET6, gateway, &rt.rtmsg_gateway);
+       if (err < 0)
+               goto out;
+
+       rt.rtmsg_flags = RTF_UP | RTF_GATEWAY;
+       rt.rtmsg_metric = 1;
+       rt.rtmsg_dst_len = 0;
+       rt.rtmsg_ifindex = index;
+
+       sk = socket(AF_INET6, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               err = -1;
+               goto out;
+       }
+
+       err = ioctl(sk, SIOCDELRT, &rt);
+       close(sk);
+out:
+       if (err < 0)
+               connman_error("Clear default IPv6 gateway error");
+
+       return err;
+}
+
+int connman_inet_set_gateway_address(int index, const char *gateway)
+{
+       struct ifreq ifr;
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk, err;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return -1;
+       }
+
+       DBG("ifname %s", ifr.ifr_name);
+
+       memset(&rt, 0, sizeof(rt));
+       rt.rt_flags = RTF_UP | RTF_GATEWAY;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+       memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = inet_addr(gateway);
+       memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+       memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
+
+       err = ioctl(sk, SIOCADDRT, &rt);
+       if (err < 0)
+               connman_error("Setting default gateway route failed (%s)",
+                                                       strerror(errno));
+
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_set_gateway_interface(int index)
+{
+       struct ifreq ifr;
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk, err;
+
+       DBG("");
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return -1;
+       }
+
+       DBG("ifname %s", ifr.ifr_name);
+
+       memset(&rt, 0, sizeof(rt));
+       rt.rt_flags = RTF_UP;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+
+       memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
+       memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+       memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
+
+       rt.rt_dev = ifr.ifr_name;
+
+       err = ioctl(sk, SIOCADDRT, &rt);
+       if (err < 0)
+               connman_error("Setting default interface route failed (%s)",
+                                                       strerror(errno));
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_clear_gateway_address(int index, const char *gateway)
+{
+       struct ifreq ifr;
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk, err;
+
+       DBG("");
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return -1;
+       }
+
+       DBG("ifname %s", ifr.ifr_name);
+
+       memset(&rt, 0, sizeof(rt));
+       rt.rt_flags = RTF_UP | RTF_GATEWAY;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+       memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = inet_addr(gateway);
+       memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+       memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
+
+       err = ioctl(sk, SIOCDELRT, &rt);
+       if (err < 0)
+               connman_error("Removing default gateway route failed (%s)",
+                                                       strerror(errno));
+
+       close(sk);
+
+       return err;
+}
+
+int connman_inet_clear_gateway_interface(int index)
+{
+       struct ifreq ifr;
+       struct rtentry rt;
+       struct sockaddr_in addr;
+       int sk, err;
+
+       DBG("");
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return -1;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return -1;
+       }
+
+       DBG("ifname %s", ifr.ifr_name);
+
+       memset(&rt, 0, sizeof(rt));
+       rt.rt_flags = RTF_UP;
+
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_addr.s_addr = INADDR_ANY;
+
+       memcpy(&rt.rt_genmask, &addr, sizeof(rt.rt_genmask));
+       memcpy(&rt.rt_dst, &addr, sizeof(rt.rt_dst));
+       memcpy(&rt.rt_gateway, &addr, sizeof(rt.rt_gateway));
+
+       rt.rt_dev = ifr.ifr_name;
+
+       err = ioctl(sk, SIOCDELRT, &rt);
+       if (err < 0)
+               connman_error("Removing default interface route failed (%s)",
+                                                       strerror(errno));
+       close(sk);
+
+       return err;
+}
+
+connman_bool_t connman_inet_compare_subnet(int index, const char *host)
+{
+       struct ifreq ifr;
+       struct in_addr _host_addr;
+       in_addr_t host_addr, netmask_addr, if_addr;
+       struct sockaddr_in *netmask, *addr;
+       int sk;
+
+       DBG("host %s", host);
+
+       if (host == NULL)
+               return FALSE;
+
+       if (inet_aton(host, &_host_addr) == 0)
+               return -1;
+       host_addr = _host_addr.s_addr;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return FALSE;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
+               close(sk);
+               return FALSE;
+       }
+
+       if (ioctl(sk, SIOCGIFNETMASK, &ifr) < 0) {
+               close(sk);
+               return FALSE;
+       }
+
+       netmask = (struct sockaddr_in *)&ifr.ifr_netmask;
+       netmask_addr = netmask->sin_addr.s_addr;
+
+       if (ioctl(sk, SIOCGIFADDR, &ifr) < 0) {
+               close(sk);
+               return FALSE;
+       }
+       addr = (struct sockaddr_in *)&ifr.ifr_addr;
+       if_addr = addr->sin_addr.s_addr;
+
+       return ((if_addr & netmask_addr) == (host_addr & netmask_addr));
+}
+
+int connman_inet_remove_from_bridge(int index, const char *bridge)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       if (bridge == NULL)
+               return -EINVAL;
+
+       sk = socket(AF_INET, SOCK_STREAM, 0);
+       if (sk < 0)
+               return sk;
+
+       memset(&ifr, 0, sizeof(ifr));
+       strncpy(ifr.ifr_name, bridge, IFNAMSIZ - 1);
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCBRDELIF, &ifr);
+
+       close(sk);
+
+       if (err < 0) {
+               connman_error("Remove interface from bridge error %s",
+                                                       strerror(errno));
+               return err;
+       }
+
+       return 0;
+}
+
+int connman_inet_add_to_bridge(int index, const char *bridge)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       if (bridge == NULL)
+               return -EINVAL;
+
+       sk = socket(AF_INET, SOCK_STREAM, 0);
+       if (sk < 0)
+               return sk;
+
+       memset(&ifr, 0, sizeof(ifr));
+       strncpy(ifr.ifr_name, bridge, IFNAMSIZ - 1);
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCBRADDIF, &ifr);
+
+       close(sk);
+
+       if (err < 0) {
+               connman_error("Add interface to bridge error %s",
+                                                       strerror(errno));
+               return err;
+       }
+
+       return 0;
+}
+
+int connman_inet_set_mtu(int index, int mtu)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       sk = socket(AF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return sk;
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+       if (err == 0) {
+               ifr.ifr_mtu = mtu;
+               err = ioctl(sk, SIOCSIFMTU, &ifr);
+       }
+
+       close(sk);
+       return err;
+}
+
+int connman_inet_setup_tunnel(char *tunnel, int mtu)
+{
+       struct ifreq ifr;
+       int sk, err, index;
+       __u32 mask;
+       __u32 flags;
+
+       if (tunnel == NULL)
+               return -EINVAL;
+
+       sk = socket(AF_INET, SOCK_DGRAM, 0);
+       if (sk < 0)
+               return sk;
+
+       index = if_nametoindex(tunnel);
+
+       err = connman_inet_set_mtu(index, mtu);
+       if (err < 0)
+               return err;
+       else if (err)
+               goto done;
+
+       memset(&ifr, 0, sizeof(ifr));
+       strncpy(ifr.ifr_name, tunnel, IFNAMSIZ);
+       err = ioctl(sk, SIOCGIFFLAGS, &ifr);
+       if (err)
+               goto done;
+
+       mask = IFF_UP;
+       flags = IFF_UP;
+
+       if ((ifr.ifr_flags ^ flags) & mask) {
+               ifr.ifr_flags &= ~mask;
+               ifr.ifr_flags |= mask & flags;
+               err = ioctl(sk, SIOCSIFFLAGS, &ifr);
+               if (err)
+                       connman_error("SIOCSIFFLAGS failed: %s",
+                                                       strerror(errno));
+       }
+
+done:
+       close(sk);
+       return err;
+}
+
+int connman_inet_create_tunnel(char **iface)
+{
+       struct ifreq ifr;
+       int i, fd;
+
+       fd = open("/dev/net/tun", O_RDWR);
+       if (fd < 0) {
+               i = -errno;
+               connman_error("Failed to open /dev/net/tun: %s",
+                               strerror(errno));
+               return i;
+       }
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
+
+       for (i = 0; i < 256; i++) {
+               sprintf(ifr.ifr_name, "tun%d", i);
+
+               if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
+                       break;
+       }
+
+       if (i == 256) {
+               connman_error("Failed to find available tun device");
+               close(fd);
+               return -ENODEV;
+       }
+
+       *iface = g_strdup(ifr.ifr_name);
+
+       return fd;
+}
+
+struct rs_cb_data {
+       GIOChannel *channel;
+       __connman_inet_rs_cb_t callback;
+       struct sockaddr_in6 addr;
+       guint rs_timeout;
+       void *user_data;
+};
+
+#define CMSG_BUF_LEN 512
+#define IN6ADDR_ALL_NODES_MC_INIT \
+       { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x1 } } } /* ff02::1 */
+#define IN6ADDR_ALL_ROUTERS_MC_INIT \
+       { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x2 } } } /* ff02::2 */
+
+static const struct in6_addr in6addr_all_nodes_mc = IN6ADDR_ALL_NODES_MC_INIT;
+static const struct in6_addr in6addr_all_routers_mc =
+                                               IN6ADDR_ALL_ROUTERS_MC_INIT;
+
+/* from netinet/in.h */
+struct in6_pktinfo {
+       struct in6_addr ipi6_addr;  /* src/dst IPv6 address */
+       unsigned int ipi6_ifindex;  /* send/recv interface index */
+};
+
+static void rs_cleanup(struct rs_cb_data *data)
+{
+       g_io_channel_shutdown(data->channel, TRUE, NULL);
+       g_io_channel_unref(data->channel);
+       data->channel = 0;
+
+       if (data->rs_timeout > 0)
+               g_source_remove(data->rs_timeout);
+
+       g_free(data);
+}
+
+static gboolean rs_timeout_cb(gpointer user_data)
+{
+       struct rs_cb_data *data = user_data;
+
+       DBG("user data %p", user_data);
+
+       if (data == NULL)
+               return FALSE;
+
+       if (data->callback != NULL)
+               data->callback(NULL, data->user_data);
+
+       data->rs_timeout = 0;
+       rs_cleanup(data);
+       return FALSE;
+}
+
+static int icmpv6_recv(int fd, gpointer user_data)
+{
+       struct msghdr mhdr;
+       struct iovec iov;
+       unsigned char chdr[CMSG_BUF_LEN];
+       unsigned char buf[1540];
+       struct rs_cb_data *data = user_data;
+       struct nd_router_advert *hdr;
+       struct sockaddr_in6 saddr;
+       ssize_t len;
+
+       DBG("");
+
+       iov.iov_len = sizeof(buf);
+       iov.iov_base = buf;
+
+       mhdr.msg_name = (void *)&saddr;
+       mhdr.msg_namelen = sizeof(struct sockaddr_in6);
+       mhdr.msg_iov = &iov;
+       mhdr.msg_iovlen = 1;
+       mhdr.msg_control = (void *)chdr;
+       mhdr.msg_controllen = CMSG_BUF_LEN;
+
+       len = recvmsg(fd, &mhdr, 0);
+       if (len < 0) {
+               data->callback(NULL, data->user_data);
+               return -errno;
+       }
+
+       hdr = (struct nd_router_advert *)buf;
+       if (hdr->nd_ra_code != 0)
+               return 0;
+
+       data->callback(hdr, data->user_data);
+       rs_cleanup(data);
+
+       return len;
+}
+
+static gboolean icmpv6_event(GIOChannel *chan, GIOCondition cond,
+                                                               gpointer data)
+{
+       int fd, ret;
+
+       DBG("");
+
+       if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
+               return FALSE;
+
+       fd = g_io_channel_unix_get_fd(chan);
+       ret = icmpv6_recv(fd, data);
+       if (ret == 0)
+               return TRUE;
+
+       return FALSE;
+}
+
+/* Adapted from RFC 1071 "C" Implementation Example */
+static uint16_t csum(const void *phdr, const void *data, socklen_t datalen)
+{
+       register unsigned long sum = 0;
+       socklen_t count;
+       uint16_t *addr;
+       int i;
+
+       /* caller must make sure datalen is even */
+
+       addr = (uint16_t *)phdr;
+       for (i = 0; i < 20; i++)
+               sum += *addr++;
+
+       count = datalen;
+       addr = (uint16_t *)data;
+
+       while (count > 1) {
+               sum += *(addr++);
+               count -= 2;
+       }
+
+       while (sum >> 16)
+               sum = (sum & 0xffff) + (sum >> 16);
+
+       return (uint16_t)~sum;
+}
+
+static int ndisc_send_unspec(int type, int oif, const struct in6_addr *dest)
+{
+       struct _phdr {
+               struct in6_addr src;
+               struct in6_addr dst;
+               uint32_t plen;
+               uint8_t reserved[3];
+               uint8_t nxt;
+       } phdr;
+
+       struct {
+               struct ip6_hdr ip;
+               union {
+                       struct icmp6_hdr icmp;
+                       struct nd_neighbor_solicit ns;
+                       struct nd_router_solicit rs;
+               } i;
+       } frame;
+
+       struct msghdr msgh;
+       struct cmsghdr *cmsg;
+       struct in6_pktinfo *pinfo;
+       struct sockaddr_in6 dst;
+       char cbuf[CMSG_SPACE(sizeof(*pinfo))];
+       struct iovec iov;
+       int fd, datalen, ret;
+
+       DBG("");
+
+       fd = socket(AF_INET6, SOCK_RAW, IPPROTO_RAW);
+       if (fd < 0)
+               return -errno;
+
+       memset(&frame, 0, sizeof(frame));
+       memset(&dst, 0, sizeof(dst));
+
+       datalen = sizeof(frame.i.rs); /* 8, csum() safe */
+       dst.sin6_addr = *dest;
+
+       /* Fill in the IPv6 header */
+       frame.ip.ip6_vfc = 0x60;
+       frame.ip.ip6_plen = htons(datalen);
+       frame.ip.ip6_nxt = IPPROTO_ICMPV6;
+       frame.ip.ip6_hlim = 255;
+       frame.ip.ip6_dst = dst.sin6_addr;
+       /* all other fields are already set to zero */
+
+       /* Prepare pseudo header for csum */
+       memset(&phdr, 0, sizeof(phdr));
+       phdr.dst = dst.sin6_addr;
+       phdr.plen = htonl(datalen);
+       phdr.nxt = IPPROTO_ICMPV6;
+
+       /* Fill in remaining ICMP header fields */
+       frame.i.icmp.icmp6_type = type;
+       frame.i.icmp.icmp6_cksum = csum(&phdr, &frame.i, datalen);
+
+       iov.iov_base = &frame;
+       iov.iov_len = sizeof(frame.ip) + datalen;
+
+       dst.sin6_family = AF_INET6;
+       msgh.msg_name = &dst;
+       msgh.msg_namelen = sizeof(dst);
+       msgh.msg_iov = &iov;
+       msgh.msg_iovlen = 1;
+       msgh.msg_flags = 0;
+
+       memset(cbuf, 0, CMSG_SPACE(sizeof(*pinfo)));
+       cmsg = (struct cmsghdr *)cbuf;
+       pinfo = (struct in6_pktinfo *)CMSG_DATA(cmsg);
+       pinfo->ipi6_ifindex = oif;
+
+       cmsg->cmsg_len = CMSG_LEN(sizeof(*pinfo));
+       cmsg->cmsg_level = IPPROTO_IPV6;
+       cmsg->cmsg_type = IPV6_PKTINFO;
+       msgh.msg_control = cmsg;
+       msgh.msg_controllen = cmsg->cmsg_len;
+
+       ret = sendmsg(fd, &msgh, 0);
+
+       close(fd);
+       return ret;
+}
+
+static inline void ipv6_addr_set(struct in6_addr *addr,
+                               uint32_t w1, uint32_t w2,
+                               uint32_t w3, uint32_t w4)
+{
+       addr->s6_addr32[0] = w1;
+       addr->s6_addr32[1] = w2;
+       addr->s6_addr32[2] = w3;
+       addr->s6_addr32[3] = w4;
+}
+
+static inline void ipv6_addr_solict_mult(const struct in6_addr *addr,
+                                       struct in6_addr *solicited)
+{
+       ipv6_addr_set(solicited, htonl(0xFF020000), 0, htonl(0x1),
+                       htonl(0xFF000000) | addr->s6_addr32[3]);
+}
+
+static int if_mc_group(int sock, int ifindex, const struct in6_addr *mc_addr,
+                                                               int cmd)
+{
+       unsigned int val = 0;
+       struct ipv6_mreq mreq;
+       int ret;
+
+       memset(&mreq, 0, sizeof(mreq));
+       mreq.ipv6mr_interface = ifindex;
+       mreq.ipv6mr_multiaddr = *mc_addr;
+
+       ret = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
+                       &val, sizeof(int));
+
+       if (ret < 0)
+               return ret;
+
+       return setsockopt(sock, IPPROTO_IPV6, cmd, &mreq, sizeof(mreq));
+}
+
+int __connman_inet_ipv6_send_rs(int index, int timeout,
+                       __connman_inet_rs_cb_t callback, void *user_data)
+{
+       struct rs_cb_data *data;
+       struct icmp6_filter filter;
+       struct in6_addr solicit;
+       struct in6_addr dst = in6addr_all_routers_mc;
+       int sk;
+
+       DBG("");
+
+       if (timeout <= 0)
+               return -EINVAL;
+
+       data = g_try_malloc0(sizeof(struct rs_cb_data));
+       if (data == NULL)
+               return -ENOMEM;
+
+       data->callback = callback;
+       data->user_data = user_data;
+       data->rs_timeout = g_timeout_add_seconds(timeout, rs_timeout_cb, data);
+
+       sk = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
+       if (sk < 0)
+               return -errno;
+
+       ICMP6_FILTER_SETBLOCKALL(&filter);
+       ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter);
+
+       setsockopt(sk, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
+                                               sizeof(struct icmp6_filter));
+
+       ipv6_addr_solict_mult(&dst, &solicit);
+       if_mc_group(sk, index, &in6addr_all_nodes_mc, IPV6_JOIN_GROUP);
+       if_mc_group(sk, index, &solicit, IPV6_JOIN_GROUP);
+
+       data->channel = g_io_channel_unix_new(sk);
+       g_io_channel_set_close_on_unref(data->channel, TRUE);
+
+       g_io_channel_set_encoding(data->channel, NULL, NULL);
+       g_io_channel_set_buffered(data->channel, FALSE);
+
+       g_io_add_watch(data->channel,
+                       G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
+                       icmpv6_event, data);
+
+       ndisc_send_unspec(ND_ROUTER_SOLICIT, index, &dst);
+
+       return 0;
+}