allow setting rps/xps defualt values via uci
[project/netifd.git] / system-linux.c
index 7955cec..0bf071e 100644 (file)
@@ -4,6 +4,7 @@
  * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
  * Copyright (C) 2013 Steven Barth <steven@midlink.org>
  * Copyright (C) 2014 Gioacchino Mazzurco <gio@eigenlab.org>
+ * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2
 #include <net/if_arp.h>
 
 #include <arpa/inet.h>
+#include <netinet/ether.h>
 #include <netinet/in.h>
 
 #include <linux/rtnetlink.h>
 #include <linux/sockios.h>
 #include <linux/ip.h>
+#include <linux/if_addr.h>
 #include <linux/if_link.h>
 #include <linux/if_vlan.h>
 #include <linux/if_bridge.h>
 #include <linux/ip6_tunnel.h>
 #include <linux/ethtool.h>
 #include <linux/fib_rules.h>
+#include <linux/veth.h>
 #include <linux/version.h>
 
 #ifndef RTN_FAILED_POLICY
 #define RTN_FAILED_POLICY 12
 #endif
 
+#ifndef IFA_F_NOPREFIXROUTE
+#define IFA_F_NOPREFIXROUTE 0x200
+#endif
+
+#ifndef IFA_FLAGS
+#define IFA_FLAGS (IFA_MULTICAST + 1)
+#endif
+
 #include <string.h>
 #include <fcntl.h>
 #include <glob.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <netlink/msg.h>
 #include <netlink/attr.h>
@@ -68,6 +81,9 @@ static struct nl_sock *sock_rtnl = NULL;
 
 static int cb_rtnl_event(struct nl_msg *msg, void *arg);
 static void handle_hotplug_event(struct uloop_fd *u, unsigned int events);
+static int system_add_proto_tunnel(const char *name, const uint8_t proto,
+                                       const unsigned int link, struct blob_attr **tb);
+static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb);
 
 static char dev_buf[256];
 
@@ -129,7 +145,7 @@ create_socket(int protocol, int groups)
 
 static bool
 create_raw_event_socket(struct event_socket *ev, int protocol, int groups,
-                        uloop_fd_handler cb, int flags)
+                       uloop_fd_handler cb, int flags)
 {
        ev->sock = create_socket(protocol, groups);
        if (!ev->sock)
@@ -233,7 +249,7 @@ int system_init(void)
                return -1;
 
        if (!create_raw_event_socket(&hotplug_event, NETLINK_KOBJECT_UEVENT, 1,
-                                    handle_hotplug_event, 0))
+                                       handle_hotplug_event, 0))
                return -1;
 
        // Receive network link events form kernel
@@ -265,6 +281,137 @@ static void system_set_disable_ipv6(struct device *dev, const char *val)
        system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/disable_ipv6", dev->ifname, val);
 }
 
+static void system_set_rpfilter(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter", dev->ifname, val);
+}
+
+static void system_set_acceptlocal(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local", dev->ifname, val);
+}
+
+static void system_set_igmpversion(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version", dev->ifname, val);
+}
+
+static void system_set_mldversion(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version", dev->ifname, val);
+}
+
+static void system_set_neigh4reachabletime(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms", dev->ifname, val);
+}
+
+static void system_set_neigh6reachabletime(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms", dev->ifname, val);
+}
+
+static void system_set_neigh4gcstaletime(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time", dev->ifname, val);
+}
+
+static void system_set_neigh6gcstaletime(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time", dev->ifname, val);
+}
+
+static void system_set_neigh4locktime(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime", dev->ifname, val);
+}
+
+static void system_set_dadtransmits(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev->ifname, val);
+}
+
+static void system_bridge_set_multicast_to_unicast(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev->ifname, val);
+}
+
+static void system_bridge_set_multicast_fast_leave(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_fast_leave", dev->ifname, val);
+}
+
+static void system_bridge_set_hairpin_mode(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev->ifname, val);
+}
+
+static void system_bridge_set_multicast_router(struct device *dev, const char *val, bool bridge)
+{
+       system_set_dev_sysctl(bridge ? "/sys/class/net/%s/bridge/multicast_router" :
+                                      "/sys/class/net/%s/brport/multicast_router",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_robustness(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_count",
+                             dev->ifname, val);
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_count",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_query_interval(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_interval",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_query_response_interval(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_query_response_interval",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_last_member_interval(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_last_member_interval",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_membership_interval(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_membership_interval",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_other_querier_timeout(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier_interval",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_startup_query_interval(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_startup_query_interval",
+                             dev->ifname, val);
+}
+
+static void system_bridge_set_learning(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/learning", dev->ifname, val);
+}
+
+static void system_bridge_set_unicast_flood(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev->ifname, val);
+}
+
+static void system_set_sendredirects(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev->ifname, val);
+}
+
 static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
 {
        int fd = -1, ret = -1;
@@ -299,30 +446,95 @@ static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t b
                        dev->ifname, buf, buf_sz);
 }
 
-#ifndef IFF_LOWER_UP
-#define IFF_LOWER_UP   0x10000
-#endif
+static int system_get_rpfilter(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/rp_filter",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_acceptlocal(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/accept_local",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_igmpversion(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/force_igmp_version",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_mldversion(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/force_mld_version",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_neigh4reachabletime(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_neigh6reachabletime(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_neigh4gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/gc_stale_time",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_neigh6gcstaletime(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv6/neigh/%s/gc_stale_time",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_neigh4locktime(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/neigh/%s/locktime",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_dadtransmits(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits",
+                       dev->ifname, buf, buf_sz);
+}
+
+static int system_get_sendredirects(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
+                       dev->ifname, buf, buf_sz);
+}
 
 // Evaluate netlink messages
 static int cb_rtnl_event(struct nl_msg *msg, void *arg)
 {
        struct nlmsghdr *nh = nlmsg_hdr(msg);
-       struct ifinfomsg *ifi = NLMSG_DATA(nh);
        struct nlattr *nla[__IFLA_MAX];
+       int link_state = 0;
+       char buf[10];
 
        if (nh->nlmsg_type != RTM_NEWLINK)
                goto out;
 
-       nlmsg_parse(nh, sizeof(*ifi), nla, __IFLA_MAX - 1, NULL);
+       nlmsg_parse(nh, sizeof(struct ifinfomsg), nla, __IFLA_MAX - 1, NULL);
        if (!nla[IFLA_IFNAME])
                goto out;
 
-       struct device *dev = device_get(nla_data(nla[IFLA_IFNAME]), false);
+       struct device *dev = device_find(nla_data(nla[IFLA_IFNAME]));
        if (!dev)
                goto out;
 
-       device_set_ifindex(dev, ifi->ifi_index);
-       device_set_link(dev, ifi->ifi_flags & IFF_LOWER_UP ? true : false);
+       if (!system_get_dev_sysctl("/sys/class/net/%s/carrier", dev->ifname, buf, sizeof(buf)))
+               link_state = strtoul(buf, NULL, 0);
+
+       device_set_link(dev, link_state ? true : false);
 
 out:
        return 0;
@@ -368,7 +580,7 @@ handle_hotplug_msg(char *data, int size)
        return;
 
 found:
-       dev = device_get(interface, false);
+       dev = device_find(interface);
        if (!dev)
                return;
 
@@ -442,17 +654,18 @@ static bool system_is_bridge(const char *name, char *buf, int buflen)
 static char *system_get_bridge(const char *name, char *buf, int buflen)
 {
        char *path;
-       ssize_t len;
+       ssize_t len = -1;
        glob_t gl;
 
        snprintf(buf, buflen, "/sys/devices/virtual/net/*/brif/%s/bridge", name);
        if (glob(buf, GLOB_NOSORT, NULL, &gl) < 0)
                return NULL;
 
-       if (gl.gl_pathc == 0)
-               return NULL;
+       if (gl.gl_pathc > 0)
+               len = readlink(gl.gl_pathv[0], buf, buflen);
+
+       globfree(&gl);
 
-       len = readlink(gl.gl_pathv[0], buf, buflen);
        if (len < 0)
                return NULL;
 
@@ -464,16 +677,26 @@ static char *system_get_bridge(const char *name, char *buf, int buflen)
        return path + 1;
 }
 
-static void system_bridge_set_wireless(const char *bridge, const char *dev)
+static void
+system_bridge_set_wireless(struct device *bridge, struct device *dev)
 {
-       snprintf(dev_buf, sizeof(dev_buf),
-                "/sys/devices/virtual/net/%s/brif/%s/multicast_to_unicast",
-                bridge, dev);
-       system_set_sysctl(dev_buf, "1");
+       bool mcast_to_ucast = dev->wireless_ap;
+       bool hairpin = true;
+
+       if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
+           !bridge->settings.multicast_to_unicast)
+               mcast_to_ucast = false;
+
+       if (!mcast_to_ucast || dev->wireless_isolate)
+               hairpin = false;
+
+       system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
+       system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
 }
 
 int system_bridge_addif(struct device *bridge, struct device *dev)
 {
+       char buf[64];
        char *oldbr;
        int ret = 0;
 
@@ -482,7 +705,24 @@ int system_bridge_addif(struct device *bridge, struct device *dev)
                ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
 
        if (dev->wireless)
-               system_bridge_set_wireless(bridge->ifname, dev->ifname);
+               system_bridge_set_wireless(bridge, dev);
+
+       if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
+               snprintf(buf, sizeof(buf), "%u", dev->settings.multicast_router);
+               system_bridge_set_multicast_router(dev, buf, false);
+       }
+
+       if (dev->settings.flags & DEV_OPT_MULTICAST_FAST_LEAVE &&
+           dev->settings.multicast_fast_leave)
+               system_bridge_set_multicast_fast_leave(dev, "1");
+
+       if (dev->settings.flags & DEV_OPT_LEARNING &&
+           !dev->settings.learning)
+               system_bridge_set_learning(dev, "0");
+
+       if (dev->settings.flags & DEV_OPT_UNICAST_FLOOD &&
+           !dev->settings.unicast_flood)
+               system_bridge_set_unicast_flood(dev, "0");
 
        return ret;
 }
@@ -492,7 +732,7 @@ int system_bridge_delif(struct device *bridge, struct device *dev)
        return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
 }
 
-static int system_if_resolve(struct device *dev)
+int system_if_resolve(struct device *dev)
 {
        struct ifreq ifr;
        strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
@@ -708,8 +948,83 @@ sec_to_jiffies(int val)
        return (unsigned long) val * 100;
 }
 
+static void system_bridge_conf_multicast_deps(struct device *bridge,
+                                             struct bridge_config *cfg,
+                                             char *buf,
+                                             int buf_len)
+{
+       int val;
+
+       if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
+           cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
+           cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
+               val = cfg->robustness * cfg->query_interval +
+                       cfg->query_response_interval;
+
+               snprintf(buf, buf_len, "%i", val);
+               system_bridge_set_membership_interval(bridge, buf);
+
+               val = cfg->robustness * cfg->query_interval +
+                       cfg->query_response_interval / 2;
+
+               snprintf(buf, buf_len, "%i", val);
+               system_bridge_set_other_querier_timeout(bridge, buf);
+       }
+
+       if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
+               val = cfg->query_interval / 4;
+
+               snprintf(buf, buf_len, "%i", val);
+               system_bridge_set_startup_query_interval(bridge, buf);
+       }
+}
+
+static void system_bridge_conf_multicast(struct device *bridge,
+                                        struct bridge_config *cfg,
+                                        char *buf,
+                                        int buf_len)
+{
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
+               bridge->ifname, cfg->igmp_snoop ? "1" : "0");
+
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
+               bridge->ifname, cfg->multicast_querier ? "1" : "0");
+
+       snprintf(buf, buf_len, "%i", cfg->hash_max);
+       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
+               bridge->ifname, buf);
+
+       if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
+               snprintf(buf, buf_len, "%u", bridge->settings.multicast_router);
+               system_bridge_set_multicast_router(bridge, buf, true);
+       }
+
+       if (cfg->flags & BRIDGE_OPT_ROBUSTNESS) {
+               snprintf(buf, buf_len, "%i", cfg->robustness);
+               system_bridge_set_robustness(bridge, buf);
+       }
+
+       if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
+               snprintf(buf, buf_len, "%i", cfg->query_interval);
+               system_bridge_set_query_interval(bridge, buf);
+       }
+
+       if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
+               snprintf(buf, buf_len, "%i", cfg->query_response_interval);
+               system_bridge_set_query_response_interval(bridge, buf);
+       }
+
+       if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL) {
+               snprintf(buf, buf_len, "%i", cfg->last_member_interval);
+               system_bridge_set_last_member_interval(bridge, buf);
+       }
+
+       system_bridge_conf_multicast_deps(bridge, cfg, buf, buf_len);
+}
+
 int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
 {
+       char buf[64];
        unsigned long args[4] = {};
 
        if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
@@ -723,11 +1038,7 @@ int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
        args[1] = sec_to_jiffies(cfg->forward_delay);
        system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);
 
-       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_snooping",
-               bridge->ifname, cfg->igmp_snoop ? "1" : "0");
-
-       system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/multicast_querier",
-               bridge->ifname, cfg->igmp_snoop ? "1" : "0");
+       system_bridge_conf_multicast(bridge, cfg, buf, sizeof(buf));
 
        args[0] = BRCTL_SET_BRIDGE_PRIORITY;
        args[1] = cfg->priority;
@@ -759,7 +1070,6 @@ int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvla
        struct nl_msg *msg;
        struct nlattr *linkinfo, *data;
        struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
-       int ifindex = system_if_resolve(dev);
        int i, rv;
        static const struct {
                const char *name;
@@ -771,9 +1081,6 @@ int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvla
                { "passthru", MACVLAN_MODE_PASSTHRU },
        };
 
-       if (ifindex == 0)
-               return -ENOENT;
-
        msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
 
        if (!msg)
@@ -784,7 +1091,7 @@ int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvla
        if (cfg->flags & MACVLAN_OPT_MACADDR)
                nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
        nla_put_string(msg, IFLA_IFNAME, macvlan->ifname);
-       nla_put_u32(msg, IFLA_LINK, ifindex);
+       nla_put_u32(msg, IFLA_LINK, dev->ifindex);
 
        if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
                goto nla_put_failure;
@@ -841,6 +1148,66 @@ int system_macvlan_del(struct device *macvlan)
        return system_link_del(macvlan->ifname);
 }
 
+int system_veth_add(struct device *veth, struct veth_config *cfg)
+{
+       struct nl_msg *msg;
+       struct ifinfomsg empty_iim = {};
+       struct nlattr *linkinfo, *data, *veth_info;
+       int rv;
+
+       msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
+
+       if (!msg)
+               return -1;
+
+       nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
+
+       if (cfg->flags & VETH_OPT_MACADDR)
+               nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
+       nla_put_string(msg, IFLA_IFNAME, veth->ifname);
+
+       if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
+               goto nla_put_failure;
+
+       nla_put_string(msg, IFLA_INFO_KIND, "veth");
+
+       if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
+               goto nla_put_failure;
+
+       if (!(veth_info = nla_nest_start(msg, VETH_INFO_PEER)))
+               goto nla_put_failure;
+
+       nlmsg_append(msg, &empty_iim, sizeof(empty_iim), 0);
+
+       if (cfg->flags & VETH_OPT_PEER_NAME)
+               nla_put_string(msg, IFLA_IFNAME, cfg->peer_name);
+       if (cfg->flags & VETH_OPT_PEER_MACADDR)
+               nla_put(msg, IFLA_ADDRESS, sizeof(cfg->peer_macaddr), cfg->peer_macaddr);
+
+       nla_nest_end(msg, veth_info);
+       nla_nest_end(msg, data);
+       nla_nest_end(msg, linkinfo);
+
+       rv = system_rtnl_call(msg);
+       if (rv) {
+               if (cfg->flags & VETH_OPT_PEER_NAME)
+                       D(SYSTEM, "Error adding veth '%s' with peer '%s': %d\n", veth->ifname, cfg->peer_name, rv);
+               else
+                       D(SYSTEM, "Error adding veth '%s': %d\n", veth->ifname, rv);
+       }
+
+       return rv;
+
+nla_put_failure:
+       nlmsg_free(msg);
+       return -ENOMEM;
+}
+
+int system_veth_del(struct device *veth)
+{
+       return system_link_del(veth->ifname);
+}
+
 static int system_vlan(struct device *dev, int id)
 {
        struct vlan_ioctl_args ifr = {
@@ -876,12 +1243,8 @@ int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlande
        struct nl_msg *msg;
        struct nlattr *linkinfo, *data;
        struct ifinfomsg iim = { .ifi_family = AF_UNSPEC };
-       int ifindex = system_if_resolve(dev);
        int rv;
 
-       if (ifindex == 0)
-               return -ENOENT;
-
        msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
 
        if (!msg)
@@ -889,11 +1252,11 @@ int system_vlandev_add(struct device *vlandev, struct device *dev, struct vlande
 
        nlmsg_append(msg, &iim, sizeof(iim), 0);
        nla_put_string(msg, IFLA_IFNAME, vlandev->ifname);
-       nla_put_u32(msg, IFLA_LINK, ifindex);
-       
+       nla_put_u32(msg, IFLA_LINK, dev->ifindex);
+
        if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
                goto nla_put_failure;
-       
+
        nla_put_string(msg, IFLA_INFO_KIND, "vlan");
 
        if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
@@ -927,7 +1290,7 @@ int system_vlandev_del(struct device *vlandev)
        return system_link_del(vlandev->ifname);
 }
 
-static void
+void
 system_if_get_settings(struct device *dev, struct device_settings *s)
 {
        struct ifreq ifr;
@@ -941,6 +1304,10 @@ system_if_get_settings(struct device *dev, struct device_settings *s)
                s->flags |= DEV_OPT_MTU;
        }
 
+       s->mtu6 = system_update_ipv6_mtu(dev, 0);
+       if (s->mtu6 > 0)
+               s->flags |= DEV_OPT_MTU6;
+
        if (ioctl(sock_ioctl, SIOCGIFTXQLEN, &ifr) == 0) {
                s->txqueuelen = ifr.ifr_qlen;
                s->flags |= DEV_OPT_TXQUEUELEN;
@@ -959,56 +1326,199 @@ system_if_get_settings(struct device *dev, struct device_settings *s)
        if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
                s->promisc = ifr.ifr_flags & IFF_PROMISC;
                s->flags |= DEV_OPT_PROMISC;
+
+               s->multicast = ifr.ifr_flags & IFF_MULTICAST;
+               s->flags |= DEV_OPT_MULTICAST;
        }
-}
 
-void
-system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
-{
-       struct ifreq ifr;
+       if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
+               s->rpfilter = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_RPFILTER;
+       }
 
-       if (!apply_mask)
-               return;
+       if (!system_get_acceptlocal(dev, buf, sizeof(buf))) {
+               s->acceptlocal = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_ACCEPTLOCAL;
+       }
 
-       memset(&ifr, 0, sizeof(ifr));
-       strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
-       if (s->flags & DEV_OPT_MTU & apply_mask) {
-               ifr.ifr_mtu = s->mtu;
-               if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
-                       s->flags &= ~DEV_OPT_MTU;
+       if (!system_get_igmpversion(dev, buf, sizeof(buf))) {
+               s->igmpversion = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_IGMPVERSION;
        }
-       if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
-               ifr.ifr_qlen = s->txqueuelen;
-               if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
-                       s->flags &= ~DEV_OPT_TXQUEUELEN;
+
+       if (!system_get_mldversion(dev, buf, sizeof(buf))) {
+               s->mldversion = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_MLDVERSION;
        }
-       if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !dev->external) {
-               ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
-               memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
-               if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
-                       s->flags &= ~DEV_OPT_MACADDR;
+
+       if (!system_get_neigh4reachabletime(dev, buf, sizeof(buf))) {
+               s->neigh4reachabletime = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_NEIGHREACHABLETIME;
        }
-       if (s->flags & DEV_OPT_IPV6 & apply_mask)
-               system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
-       if (s->flags & DEV_OPT_PROMISC & apply_mask) {
-               if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
-                                   !s->promisc ? IFF_PROMISC : 0) < 0)
-                       s->flags &= ~DEV_OPT_PROMISC;
+
+       if (!system_get_neigh6reachabletime(dev, buf, sizeof(buf))) {
+               s->neigh6reachabletime = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_NEIGHREACHABLETIME;
        }
-}
 
-int system_if_up(struct device *dev)
-{
+       if (!system_get_neigh4locktime(dev, buf, sizeof(buf))) {
+               s->neigh4locktime = strtol(buf, NULL, 0);
+               s->flags |= DEV_OPT_NEIGHLOCKTIME;
+       }
+
+       if (!system_get_neigh4gcstaletime(dev, buf, sizeof(buf))) {
+               s->neigh4gcstaletime = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_NEIGHGCSTALETIME;
+       }
+
+       if (!system_get_neigh6gcstaletime(dev, buf, sizeof(buf))) {
+               s->neigh6gcstaletime = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_NEIGHGCSTALETIME;
+       }
+
+       if (!system_get_dadtransmits(dev, buf, sizeof(buf))) {
+               s->dadtransmits = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_DADTRANSMITS;
+       }
+
+       if (!system_get_sendredirects(dev, buf, sizeof(buf))) {
+               s->sendredirects = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_SENDREDIRECTS;
+       }
+}
+
+static void
+system_if_set_rps_xps_val(const char *path, char *fmt, int val)
+{
+       char val_buf[8];
+       glob_t gl;
+       int i;
+
+       if (glob(path, 0, NULL, &gl))
+               return;
+
+       snprintf(val_buf, sizeof(val_buf), fmt, val);
+       for (i = 0; i < gl.gl_pathc; i++)
+               system_set_sysctl(gl.gl_pathv[i], val_buf);
+
+       globfree(&gl);
+}
+
+static void
+system_if_apply_rps_xps(struct device *dev, struct device_settings *s)
+{
+       long n_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+       int val, rps_val, rps_flow_cnt, xps_val;
+
+       if (n_cpus < 2)
+               return;
+
+       val = (1 << n_cpus) - 1;
+       rps_val = s->rps_val ? s->rps_val : val;
+       snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/rps_cpus", dev->ifname);
+       system_if_set_rps_xps_val(dev_buf, "%x", s->rps ? rps_val : 0);
+
+       rps_flow_cnt = s->rps_flow_cnt ? s->rps_flow_cnt : 0;
+       snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/rps_flow_cnt", dev->ifname);
+       system_if_set_rps_xps_val(dev_buf, "%d", s->rps ? rps_flow_cnt : 0);
+
+       xps_val = s->xps_val ? s->xps_val : val;
+       snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/xps_cpus", dev->ifname);
+       system_if_set_rps_xps_val(dev_buf, "%x", s->xps ? xps_val : 0);
+}
+
+void
+system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask)
+{
+       struct ifreq ifr;
+       char buf[12];
+
+       memset(&ifr, 0, sizeof(ifr));
+       strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name));
+       if (s->flags & DEV_OPT_MTU & apply_mask) {
+               ifr.ifr_mtu = s->mtu;
+               if (ioctl(sock_ioctl, SIOCSIFMTU, &ifr) < 0)
+                       s->flags &= ~DEV_OPT_MTU;
+       }
+       if (s->flags & DEV_OPT_MTU6 & apply_mask) {
+               system_update_ipv6_mtu(dev, s->mtu6);
+       }
+       if (s->flags & DEV_OPT_TXQUEUELEN & apply_mask) {
+               ifr.ifr_qlen = s->txqueuelen;
+               if (ioctl(sock_ioctl, SIOCSIFTXQLEN, &ifr) < 0)
+                       s->flags &= ~DEV_OPT_TXQUEUELEN;
+       }
+       if ((s->flags & DEV_OPT_MACADDR & apply_mask) && !dev->external) {
+               ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
+               memcpy(&ifr.ifr_hwaddr.sa_data, s->macaddr, sizeof(s->macaddr));
+               if (ioctl(sock_ioctl, SIOCSIFHWADDR, &ifr) < 0)
+                       s->flags &= ~DEV_OPT_MACADDR;
+       }
+       if (s->flags & DEV_OPT_IPV6 & apply_mask)
+               system_set_disable_ipv6(dev, s->ipv6 ? "0" : "1");
+       if (s->flags & DEV_OPT_PROMISC & apply_mask) {
+               if (system_if_flags(dev->ifname, s->promisc ? IFF_PROMISC : 0,
+                                   !s->promisc ? IFF_PROMISC : 0) < 0)
+                       s->flags &= ~DEV_OPT_PROMISC;
+       }
+       if (s->flags & DEV_OPT_RPFILTER & apply_mask) {
+               snprintf(buf, sizeof(buf), "%u", s->rpfilter);
+               system_set_rpfilter(dev, buf);
+       }
+       if (s->flags & DEV_OPT_ACCEPTLOCAL & apply_mask)
+               system_set_acceptlocal(dev, s->acceptlocal ? "1" : "0");
+       if (s->flags & DEV_OPT_IGMPVERSION & apply_mask) {
+               snprintf(buf, sizeof(buf), "%u", s->igmpversion);
+               system_set_igmpversion(dev, buf);
+       }
+       if (s->flags & DEV_OPT_MLDVERSION & apply_mask) {
+               snprintf(buf, sizeof(buf), "%u", s->mldversion);
+               system_set_mldversion(dev, buf);
+       }
+       if (s->flags & DEV_OPT_NEIGHREACHABLETIME & apply_mask) {
+               snprintf(buf, sizeof(buf), "%u", s->neigh4reachabletime);
+               system_set_neigh4reachabletime(dev, buf);
+               snprintf(buf, sizeof(buf), "%u", s->neigh6reachabletime);
+               system_set_neigh6reachabletime(dev, buf);
+       }
+       if (s->flags & DEV_OPT_NEIGHLOCKTIME & apply_mask) {
+               snprintf(buf, sizeof(buf), "%d", s->neigh4locktime);
+               system_set_neigh4locktime(dev, buf);
+       }
+       if (s->flags & DEV_OPT_NEIGHGCSTALETIME & apply_mask) {
+               snprintf(buf, sizeof(buf), "%u", s->neigh4gcstaletime);
+               system_set_neigh4gcstaletime(dev, buf);
+               snprintf(buf, sizeof(buf), "%u", s->neigh6gcstaletime);
+               system_set_neigh6gcstaletime(dev, buf);
+       }
+       if (s->flags & DEV_OPT_DADTRANSMITS & apply_mask) {
+               snprintf(buf, sizeof(buf), "%u", s->dadtransmits);
+               system_set_dadtransmits(dev, buf);
+       }
+       if (s->flags & DEV_OPT_MULTICAST & apply_mask) {
+               if (system_if_flags(dev->ifname, s->multicast ? IFF_MULTICAST : 0,
+                                   !s->multicast ? IFF_MULTICAST : 0) < 0)
+                       s->flags &= ~DEV_OPT_MULTICAST;
+       }
+       if (s->flags & DEV_OPT_SENDREDIRECTS & apply_mask)
+               system_set_sendredirects(dev, s->sendredirects ? "1" : "0");
+
+       system_if_apply_rps_xps(dev, s);
+}
+
+int system_if_up(struct device *dev)
+{
        system_if_get_settings(dev, &dev->orig_settings);
+       /* Only keep orig settings based on what needs to be set */
+       dev->orig_settings.valid_flags = dev->orig_settings.flags;
+       dev->orig_settings.flags &= dev->settings.flags;
        system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
-       device_set_ifindex(dev, system_if_resolve(dev));
        return system_if_flags(dev->ifname, IFF_UP, 0);
 }
 
 int system_if_down(struct device *dev)
 {
        int ret = system_if_flags(dev->ifname, 0, IFF_UP);
-       dev->orig_settings.flags &= dev->settings.flags;
        system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
        return ret;
 }
@@ -1019,6 +1529,10 @@ struct if_check_data {
        int ret;
 };
 
+#ifndef IFF_LOWER_UP
+#define IFF_LOWER_UP   0x10000
+#endif
+
 static int cb_if_check_valid(struct nl_msg *msg, void *arg)
 {
        struct nlmsghdr *nh = nlmsg_hdr(msg);
@@ -1067,10 +1581,13 @@ int system_if_check(struct device *dev)
        int ret = 1;
 
        msg = nlmsg_alloc_simple(RTM_GETLINK, 0);
-       if (!msg || nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
-           nla_put_string(msg, IFLA_IFNAME, dev->ifname))
+       if (!msg)
                goto out;
 
+       if (nlmsg_append(msg, &ifi, sizeof(ifi), 0) ||
+           nla_put_string(msg, IFLA_IFNAME, dev->ifname))
+               goto free;
+
        nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_if_check_valid, &chk);
        nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, cb_if_check_ack, &chk);
        nl_cb_err(cb, NL_CB_CUSTOM, cb_if_check_error, &chk);
@@ -1079,9 +1596,10 @@ int system_if_check(struct device *dev)
        while (chk.pending > 0)
                nl_recvmsgs(sock_rtnl, cb);
 
-       nlmsg_free(msg);
        ret = chk.pending;
 
+free:
+       nlmsg_free(msg);
 out:
        nl_cb_put(cb);
        return ret;
@@ -1304,8 +1822,10 @@ static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
 
                if (addr->valid_until) {
                        int64_t valid = addr->valid_until - now;
-                       if (valid <= 0)
+                       if (valid <= 0) {
+                               nlmsg_free(msg);
                                return -1;
+                       }
                        else if (valid > UINT32_MAX)
                                valid = UINT32_MAX;
 
@@ -1313,6 +1833,9 @@ static int system_addr(struct device *dev, struct device_addr *addr, int cmd)
                }
 
                nla_put(msg, IFA_CACHEINFO, sizeof(cinfo), &cinfo);
+
+               if (cmd == RTM_NEWADDR && (addr->flags & DEVADDR_OFFLINK))
+                       nla_put_u32(msg, IFA_FLAGS, IFA_F_NOPREFIXROUTE);
        }
 
        return system_rtnl_call(msg);
@@ -1350,7 +1873,7 @@ static int system_rt(struct device *dev, struct device_route *route, int cmd)
                .rtm_dst_len = route->mask,
                .rtm_src_len = route->sourcemask,
                .rtm_table = (table < 256) ? table : RT_TABLE_UNSPEC,
-               .rtm_protocol = (route->flags & DEVADDR_KERNEL) ? RTPROT_KERNEL : RTPROT_STATIC,
+               .rtm_protocol = (route->flags & DEVROUTE_PROTO) ? route->proto : RTPROT_STATIC,
                .rtm_scope = RT_SCOPE_NOWHERE,
                .rtm_type = (cmd == RTM_DELROUTE) ? 0: RTN_UNICAST,
                .rtm_flags = (route->flags & DEVROUTE_ONLINK) ? RTNH_F_ONLINK : 0,
@@ -1376,11 +1899,17 @@ static int system_rt(struct device *dev, struct device_route *route, int cmd)
                                rtm.rtm_table = RT_TABLE_LOCAL;
                }
 
-               if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT)
+               if (rtm.rtm_type == RTN_LOCAL || rtm.rtm_type == RTN_NAT) {
                        rtm.rtm_scope = RT_SCOPE_HOST;
-               else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
-                       rtm.rtm_type == RTN_ANYCAST)
+               else if (rtm.rtm_type == RTN_BROADCAST || rtm.rtm_type == RTN_MULTICAST ||
+                               rtm.rtm_type == RTN_ANYCAST) {
                        rtm.rtm_scope = RT_SCOPE_LINK;
+               } else if (rtm.rtm_type == RTN_BLACKHOLE || rtm.rtm_type == RTN_UNREACHABLE ||
+                               rtm.rtm_type == RTN_PROHIBIT || rtm.rtm_type == RTN_FAILED_POLICY ||
+                               rtm.rtm_type == RTN_THROW) {
+                       rtm.rtm_scope = RT_SCOPE_UNIVERSE;
+                       dev = NULL;
+               }
        }
 
        msg = nlmsg_alloc_simple(cmd, flags);
@@ -1392,8 +1921,12 @@ static int system_rt(struct device *dev, struct device_route *route, int cmd)
        if (route->mask)
                nla_put(msg, RTA_DST, alen, &route->addr);
 
-       if (route->sourcemask)
-               nla_put(msg, RTA_SRC, alen, &route->source);
+       if (route->sourcemask) {
+               if (rtm.rtm_family == AF_INET)
+                       nla_put(msg, RTA_PREFSRC, alen, &route->source);
+               else
+                       nla_put(msg, RTA_SRC, alen, &route->source);
+       }
 
        if (route->metric > 0)
                nla_put_u32(msg, RTA_PRIORITY, route->metric);
@@ -1459,6 +1992,45 @@ bool system_resolve_rt_type(const char *type, unsigned int *id)
        return system_rtn_aton(type, id);
 }
 
+bool system_resolve_rt_proto(const char *type, unsigned int *id)
+{
+       FILE *f;
+       char *e, buf[128];
+       unsigned int n, proto = 256;
+       n = strtoul(type, &e, 0);
+       if (!*e && e != type)
+               proto = n;
+       else if (!strcmp(type, "unspec"))
+               proto = RTPROT_UNSPEC;
+       else if (!strcmp(type, "kernel"))
+               proto = RTPROT_KERNEL;
+       else if (!strcmp(type, "boot"))
+               proto = RTPROT_BOOT;
+       else if (!strcmp(type, "static"))
+               proto = RTPROT_STATIC;
+       else if ((f = fopen("/etc/iproute2/rt_protos", "r")) != NULL) {
+               while (fgets(buf, sizeof(buf) - 1, f) != NULL) {
+                       if ((e = strtok(buf, " \t\n")) == NULL || *e == '#')
+                               continue;
+
+                       n = strtoul(e, NULL, 10);
+                       e = strtok(NULL, " \t\n");
+
+                       if (e && !strcmp(e, type)) {
+                               proto = n;
+                               break;
+                       }
+               }
+               fclose(f);
+       }
+
+       if (proto > 255)
+               return false;
+
+       *id = proto;
+       return true;
+}
+
 bool system_resolve_rt_table(const char *name, unsigned int *id)
 {
        FILE *f;
@@ -1510,6 +2082,25 @@ bool system_is_default_rt_table(unsigned int id)
        return (id == RT_TABLE_MAIN);
 }
 
+bool system_resolve_rpfilter(const char *filter, unsigned int *id)
+{
+       char *e;
+       unsigned int n;
+
+       if (!strcmp(filter, "strict"))
+               n = 1;
+       else if (!strcmp(filter, "loose"))
+               n = 2;
+       else {
+               n = strtoul(filter, &e, 0);
+               if (*e || e == filter || n > 2)
+                       return false;
+       }
+
+       *id = n;
+       return true;
+}
+
 static int system_iprule(struct iprule *rule, int cmd)
 {
        int alen = ((rule->flags & IPRULE_FAMILY) == IPRULE_INET4) ? 4 : 16;
@@ -1524,10 +2115,8 @@ static int system_iprule(struct iprule *rule, int cmd)
                .rtm_flags = 0,
        };
 
-       if (cmd == RTM_NEWRULE) {
+       if (cmd == RTM_NEWRULE)
                rtm.rtm_type = RTN_UNICAST;
-               rtm.rtm_flags |= NLM_F_REPLACE | NLM_F_EXCL;
-       }
 
        if (rule->invert)
                rtm.rtm_flags |= FIB_RULE_INVERT;
@@ -1588,6 +2177,9 @@ static int system_iprule(struct iprule *rule, int cmd)
                        nla_put_u32(msg, FRA_TABLE, rule->lookup);
        }
 
+       if (rule->flags & IPRULE_SUP_PREFIXLEN)
+               nla_put_u32(msg, FRA_SUPPRESS_PREFIXLEN, rule->sup_prefixlen);
+
        if (rule->flags & IPRULE_GOTO)
                nla_put_u32(msg, FRA_GOTO, rule->gotoid);
 
@@ -1677,6 +2269,120 @@ static int tunnel_ioctl(const char *name, int cmd, void *p)
 }
 
 #ifdef IFLA_IPTUN_MAX
+static int system_add_ip6_tunnel(const char *name, const unsigned int link,
+                                struct blob_attr **tb)
+{
+       struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
+                               NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
+       struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
+       struct blob_attr *cur;
+       int ret = 0, ttl = 0;
+
+       if (!nlm)
+               return -1;
+
+       nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
+       nla_put_string(nlm, IFLA_IFNAME, name);
+
+       if (link)
+               nla_put_u32(nlm, IFLA_LINK, link);
+
+       struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
+       if (!linkinfo) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
+       struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
+       if (!infodata) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       if (link)
+               nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
+
+       if ((cur = tb[TUNNEL_ATTR_TTL]))
+               ttl = blobmsg_get_u32(cur);
+
+       nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
+       nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
+       nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
+
+       struct in6_addr in6buf;
+       if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+               if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+               nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
+       }
+
+       if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+               if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+               nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
+       }
+
+#ifdef IFLA_IPTUN_FMR_MAX
+       if ((cur = tb[TUNNEL_ATTR_FMRS])) {
+               struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
+
+               struct blob_attr *fmr;
+               unsigned rem, fmrcnt = 0;
+               blobmsg_for_each_attr(fmr, cur, rem) {
+                       if (blobmsg_type(fmr) != BLOBMSG_TYPE_STRING)
+                               continue;
+
+                       unsigned ip4len, ip6len, ealen, offset = 6;
+                       char ip6buf[48];
+                       char ip4buf[16];
+
+                       if (sscanf(blobmsg_get_string(fmr), "%47[^/]/%u,%15[^/]/%u,%u,%u",
+                                       ip6buf, &ip6len, ip4buf, &ip4len, &ealen, &offset) < 5) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+
+                       struct in6_addr ip6prefix;
+                       struct in_addr ip4prefix;
+                       if (inet_pton(AF_INET6, ip6buf, &ip6prefix) != 1 ||
+                                       inet_pton(AF_INET, ip4buf, &ip4prefix) != 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+
+                       struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
+
+                       nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
+                       nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
+                       nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
+                       nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
+                       nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
+                       nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
+
+                       nla_nest_end(nlm, rule);
+               }
+
+               nla_nest_end(nlm, fmrs);
+       }
+#endif
+
+       nla_nest_end(nlm, infodata);
+       nla_nest_end(nlm, linkinfo);
+
+       return system_rtnl_call(nlm);
+
+failure:
+       nlmsg_free(nlm);
+       return ret;
+}
+#endif
+
+#ifdef IFLA_IPTUN_MAX
 #define IP6_FLOWINFO_TCLASS    htonl(0x0FF00000)
 static int system_add_gre_tunnel(const char *name, const char *kind,
                                 const unsigned int link, struct blob_attr **tb, bool v6)
@@ -1687,7 +2393,7 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
        uint32_t ikey = 0, okey = 0, flags = 0, flowinfo = 0;
        uint16_t iflags = 0, oflags = 0;
        uint8_t tos = 0;
-       int ret = 0, ttl = 64;
+       int ret = 0, ttl = 0;
 
        nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
        if (!nlm)
@@ -1715,8 +2421,6 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
        if ((cur = tb[TUNNEL_ATTR_TTL]))
                ttl = blobmsg_get_u32(cur);
 
-       nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
-
        if ((cur = tb[TUNNEL_ATTR_TOS])) {
                char *str = blobmsg_get_string(cur);
                if (strcmp(str, "inherit")) {
@@ -1737,33 +2441,43 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
                        else
                                tos = 1;
                }
-        }
+       }
 
-       if ((cur = tb[TUNNEL_ATTR_INFO]) && (blobmsg_type(cur) == BLOBMSG_TYPE_STRING)) {
-               uint8_t icsum, ocsum, iseqno, oseqno;
-               if (sscanf(blobmsg_get_string(cur), "%u,%u,%hhu,%hhu,%hhu,%hhu",
-                       &ikey, &okey, &icsum, &ocsum, &iseqno, &oseqno) < 6) {
-                       ret = -EINVAL;
-                       goto failure;
-               }
+       if ((cur = tb[TUNNEL_ATTR_DATA])) {
+               struct blob_attr *tb_data[__GRE_DATA_ATTR_MAX];
+
+               blobmsg_parse(gre_data_attr_list.params, __GRE_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
 
-               if (ikey)
-                       iflags |= GRE_KEY;
+               if ((cur = tb_data[GRE_DATA_IKEY])) {
+                       if ((ikey = blobmsg_get_u32(cur)))
+                               iflags |= GRE_KEY;
+               }
 
-               if (okey)
-                       oflags |= GRE_KEY;
+               if ((cur = tb_data[GRE_DATA_OKEY])) {
+                       if ((okey = blobmsg_get_u32(cur)))
+                               oflags |= GRE_KEY;
+               }
 
-               if (icsum)
-                       iflags |= GRE_CSUM;
+               if ((cur = tb_data[GRE_DATA_ICSUM])) {
+                       if (blobmsg_get_bool(cur))
+                               iflags |= GRE_CSUM;
+               }
 
-               if (ocsum)
-                       oflags |= GRE_CSUM;
+               if ((cur = tb_data[GRE_DATA_OCSUM])) {
+                       if (blobmsg_get_bool(cur))
+                               oflags |= GRE_CSUM;
+               }
 
-               if (iseqno)
-                       iflags |= GRE_SEQ;
+               if ((cur = tb_data[GRE_DATA_ISEQNO])) {
+                       if (blobmsg_get_bool(cur))
+                               iflags |= GRE_SEQ;
+               }
 
-               if (oseqno)
-                       oflags |= GRE_SEQ;
+               if ((cur = tb[GRE_DATA_OSEQNO])) {
+                       if (blobmsg_get_bool(cur))
+                               oflags |= GRE_SEQ;
+               }
        }
 
        if (v6) {
@@ -1790,6 +2504,9 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
 
                if (flags)
                        nla_put_u32(nlm, IFLA_GRE_FLAGS, flags);
+
+               if (!ttl)
+                       ttl = 64;
        } else {
                struct in_addr inbuf;
                bool set_df = true;
@@ -1825,17 +2542,23 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
                if ((cur = tb[TUNNEL_ATTR_DF]))
                        set_df = blobmsg_get_bool(cur);
 
-               /* ttl !=0 and nopmtudisc are incompatible */
-               if (ttl && !set_df) {
-                       ret = -EINVAL;
-                       goto failure;
-               }
+               if (!set_df) {
+                       /* ttl != 0 and nopmtudisc are incompatible */
+                       if (ttl) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+               } else if (!ttl)
+                       ttl = 64;
 
                nla_put_u8(nlm, IFLA_GRE_PMTUDISC, set_df ? 1 : 0);
 
                nla_put_u8(nlm, IFLA_GRE_TOS, tos);
        }
 
+       if (ttl)
+               nla_put_u8(nlm, IFLA_GRE_TTL, ttl);
+
        if (oflags)
                nla_put_u16(nlm, IFLA_GRE_OFLAGS, oflags);
 
@@ -1843,10 +2566,10 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
                nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
 
        if (okey)
-               nla_put_u32(nlm, IFLA_GRE_OKEY, okey);
+               nla_put_u32(nlm, IFLA_GRE_OKEY, htonl(okey));
 
        if (ikey)
-               nla_put_u32(nlm, IFLA_GRE_IKEY, ikey);
+               nla_put_u32(nlm, IFLA_GRE_IKEY, htonl(ikey));
 
        nla_nest_end(nlm, infodata);
        nla_nest_end(nlm, linkinfo);
@@ -1859,37 +2582,339 @@ failure:
 }
 #endif
 
-static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
+#ifdef IFLA_VTI_MAX
+static int system_add_vti_tunnel(const char *name, const char *kind,
+                                const unsigned int link, struct blob_attr **tb, bool v6)
 {
+       struct nl_msg *nlm;
+       struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
        struct blob_attr *cur;
-       bool set_df = true;
-       struct ip_tunnel_parm p  = {
-               .link = link,
-               .iph = {
-                       .version = 4,
-                       .ihl = 5,
-                       .protocol = proto,
-               }
-       };
-
-       if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
-                       inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
-               return -EINVAL;
+       int ret = 0;
 
-       if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
-                       inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
-               return -EINVAL;
+       nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
+       if (!nlm)
+               return -1;
 
-       if ((cur = tb[TUNNEL_ATTR_DF]))
-               set_df = blobmsg_get_bool(cur);
+       nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
+       nla_put_string(nlm, IFLA_IFNAME, name);
 
-       if ((cur = tb[TUNNEL_ATTR_TTL]))
-               p.iph.ttl = blobmsg_get_u32(cur);
+       struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
+       if (!linkinfo) {
+               ret = -ENOMEM;
+               goto failure;
+       }
 
-       if ((cur = tb[TUNNEL_ATTR_TOS])) {
-               char *str = blobmsg_get_string(cur);
-               if (strcmp(str, "inherit")) {
-                       unsigned uval;
+       nla_put_string(nlm, IFLA_INFO_KIND, kind);
+       struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
+       if (!infodata) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       if (link)
+               nla_put_u32(nlm, IFLA_VTI_LINK, link);
+
+       if (v6) {
+               struct in6_addr in6buf;
+               if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+                       if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(nlm, IFLA_VTI_LOCAL, sizeof(in6buf), &in6buf);
+               }
+
+               if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+                       if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(nlm, IFLA_VTI_REMOTE, sizeof(in6buf), &in6buf);
+               }
+
+       } else {
+               struct in_addr inbuf;
+
+               if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+                       if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(nlm, IFLA_VTI_LOCAL, sizeof(inbuf), &inbuf);
+               }
+
+               if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+                       if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(nlm, IFLA_VTI_REMOTE, sizeof(inbuf), &inbuf);
+               }
+
+       }
+
+       if ((cur = tb[TUNNEL_ATTR_DATA])) {
+               struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
+               uint32_t ikey = 0, okey = 0;
+
+               blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
+
+               if ((cur = tb_data[VTI_DATA_IKEY])) {
+                       if ((ikey = blobmsg_get_u32(cur)))
+                               nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
+               }
+
+               if ((cur = tb_data[VTI_DATA_OKEY])) {
+                       if ((okey = blobmsg_get_u32(cur)))
+                               nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
+               }
+       }
+
+       nla_nest_end(nlm, infodata);
+       nla_nest_end(nlm, linkinfo);
+
+       return system_rtnl_call(nlm);
+
+failure:
+       nlmsg_free(nlm);
+       return ret;
+}
+#endif
+
+#ifdef IFLA_VXLAN_MAX
+static int system_add_vxlan(const char *name, const unsigned int link, struct blob_attr **tb, bool v6)
+{
+       struct blob_attr *tb_data[__VXLAN_DATA_ATTR_MAX];
+       struct nl_msg *msg;
+       struct nlattr *linkinfo, *data;
+       struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
+       struct blob_attr *cur;
+       int ret = 0;
+
+       if ((cur = tb[TUNNEL_ATTR_DATA]))
+               blobmsg_parse(vxlan_data_attr_list.params, __VXLAN_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
+       else
+               return -EINVAL;
+
+       msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
+
+       if (!msg)
+               return -1;
+
+       nlmsg_append(msg, &iim, sizeof(iim), 0);
+
+       nla_put_string(msg, IFLA_IFNAME, name);
+
+       if ((cur = tb_data[VXLAN_DATA_ATTR_MACADDR])) {
+               struct ether_addr *ea = ether_aton(blobmsg_get_string(cur));
+               if (!ea) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+
+               nla_put(msg, IFLA_ADDRESS, ETH_ALEN, ea);
+       }
+
+       if ((cur = tb[TUNNEL_ATTR_MTU])) {
+               uint32_t mtu = blobmsg_get_u32(cur);
+               nla_put_u32(msg, IFLA_MTU, mtu);
+       }
+
+       if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO))) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       nla_put_string(msg, IFLA_INFO_KIND, "vxlan");
+
+       if (!(data = nla_nest_start(msg, IFLA_INFO_DATA))) {
+               ret = -ENOMEM;
+               goto failure;
+       }
+
+       if (link)
+               nla_put_u32(msg, IFLA_VXLAN_LINK, link);
+
+       if ((cur = tb_data[VXLAN_DATA_ATTR_ID])) {
+               uint32_t id = blobmsg_get_u32(cur);
+               if (id >= (1u << 24) - 1) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+
+               nla_put_u32(msg, IFLA_VXLAN_ID, id);
+       }
+
+       if (v6) {
+               struct in6_addr in6buf;
+               if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+                       if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(msg, IFLA_VXLAN_LOCAL6, sizeof(in6buf), &in6buf);
+               }
+
+               if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+                       if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(msg, IFLA_VXLAN_GROUP6, sizeof(in6buf), &in6buf);
+               }
+       } else {
+               struct in_addr inbuf;
+
+               if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
+                       if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(msg, IFLA_VXLAN_LOCAL, sizeof(inbuf), &inbuf);
+               }
+
+               if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
+                       if (inet_pton(AF_INET, blobmsg_data(cur), &inbuf) < 1) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+                       nla_put(msg, IFLA_VXLAN_GROUP, sizeof(inbuf), &inbuf);
+               }
+       }
+
+       uint32_t port = 4789;
+       if ((cur = tb_data[VXLAN_DATA_ATTR_PORT])) {
+               port = blobmsg_get_u32(cur);
+               if (port < 1 || port > 65535) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+       }
+       nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
+
+       if ((cur = tb[TUNNEL_ATTR_TOS])) {
+               char *str = blobmsg_get_string(cur);
+               unsigned tos = 1;
+
+               if (strcmp(str, "inherit")) {
+                       if (!system_tos_aton(str, &tos))
+                               return -EINVAL;
+               }
+
+               nla_put_u8(msg, IFLA_VXLAN_TOS, tos);
+       }
+
+       if ((cur = tb[TUNNEL_ATTR_TTL])) {
+               uint32_t ttl = blobmsg_get_u32(cur);
+               if (ttl < 1 || ttl > 255) {
+                       ret = -EINVAL;
+                       goto failure;
+               }
+
+               nla_put_u8(msg, IFLA_VXLAN_TTL, ttl);
+       }
+
+       nla_nest_end(msg, data);
+       nla_nest_end(msg, linkinfo);
+
+       ret = system_rtnl_call(msg);
+       if (ret)
+               D(SYSTEM, "Error adding vxlan '%s': %d\n", name, ret);
+
+       return ret;
+
+failure:
+       nlmsg_free(msg);
+       return ret;
+}
+#endif
+
+static int system_add_sit_tunnel(const char *name, const unsigned int link, struct blob_attr **tb)
+{
+       struct blob_attr *cur;
+       int ret = 0;
+
+       if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
+               return -1;
+
+#ifdef SIOCADD6RD
+       if ((cur = tb[TUNNEL_ATTR_DATA])) {
+               struct blob_attr *tb_data[__SIXRD_DATA_ATTR_MAX];
+               unsigned int mask;
+               struct ip_tunnel_6rd p6;
+
+               blobmsg_parse(sixrd_data_attr_list.params, __SIXRD_DATA_ATTR_MAX, tb_data,
+                       blobmsg_data(cur), blobmsg_len(cur));
+
+               memset(&p6, 0, sizeof(p6));
+
+               if ((cur = tb_data[SIXRD_DATA_PREFIX])) {
+                       if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
+                                               &p6.prefix, &mask) || mask > 128) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+
+                       p6.prefixlen = mask;
+               }
+
+               if ((cur = tb_data[SIXRD_DATA_RELAY_PREFIX])) {
+                       if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
+                                               &p6.relay_prefix, &mask) || mask > 32) {
+                               ret = -EINVAL;
+                               goto failure;
+                       }
+
+                       p6.relay_prefixlen = mask;
+               }
+
+               if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
+                       ret = -1;
+                       goto failure;
+               }
+       }
+#endif
+
+       return ret;
+
+failure:
+       __system_del_ip_tunnel(name, tb);
+       return ret;
+}
+
+static int system_add_proto_tunnel(const char *name, const uint8_t proto, const unsigned int link, struct blob_attr **tb)
+{
+       struct blob_attr *cur;
+       bool set_df = true;
+       struct ip_tunnel_parm p  = {
+               .link = link,
+               .iph = {
+                       .version = 4,
+                       .ihl = 5,
+                       .protocol = proto,
+               }
+       };
+
+       if ((cur = tb[TUNNEL_ATTR_LOCAL]) &&
+                       inet_pton(AF_INET, blobmsg_data(cur), &p.iph.saddr) < 1)
+               return -EINVAL;
+
+       if ((cur = tb[TUNNEL_ATTR_REMOTE]) &&
+                       inet_pton(AF_INET, blobmsg_data(cur), &p.iph.daddr) < 1)
+               return -EINVAL;
+
+       if ((cur = tb[TUNNEL_ATTR_DF]))
+               set_df = blobmsg_get_bool(cur);
+
+       if ((cur = tb[TUNNEL_ATTR_TTL]))
+               p.iph.ttl = blobmsg_get_u32(cur);
+
+       if ((cur = tb[TUNNEL_ATTR_TOS])) {
+               char *str = blobmsg_get_string(cur);
+               if (strcmp(str, "inherit")) {
+                       unsigned uval;
 
                        if (!system_tos_aton(str, &uval))
                                return -EINVAL;
@@ -1927,7 +2952,9 @@ static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
        str = blobmsg_data(cur);
 
        if (!strcmp(str, "greip") || !strcmp(str, "gretapip") ||
-           !strcmp(str, "greip6") || !strcmp(str, "gretapip6"))
+           !strcmp(str, "greip6") || !strcmp(str, "gretapip6") ||
+           !strcmp(str, "vtiip") || !strcmp(str, "vtiip6") ||
+           !strcmp(str, "vxlan") || !strcmp(str, "vxlan6"))
                return system_link_del(name);
        else
                return tunnel_ioctl(name, SIOCDELTUNNEL, NULL);
@@ -1947,23 +2974,26 @@ int system_update_ipv6_mtu(struct device *dev, int mtu)
 {
        int ret = -1;
        char buf[64];
+       int fd;
+
        snprintf(buf, sizeof(buf), "/proc/sys/net/ipv6/conf/%s/mtu",
                        dev->ifname);
 
-       int fd = open(buf, O_RDWR);
-       ssize_t len = read(fd, buf, sizeof(buf) - 1);
-       if (len < 0)
-               goto out;
+       fd = open(buf, O_RDWR);
+       if (fd < 0)
+               return ret;
 
-       buf[len] = 0;
-       ret = atoi(buf);
+       if (!mtu) {
+               ssize_t len = read(fd, buf, sizeof(buf) - 1);
+               if (len < 0)
+                       goto out;
 
-       if (!mtu || ret <= mtu)
-               goto out;
-
-       lseek(fd, 0, SEEK_SET);
-       if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) <= 0)
-               ret = -1;
+               buf[len] = 0;
+               ret = atoi(buf);
+       } else {
+               if (write(fd, buf, snprintf(buf, sizeof(buf), "%i", mtu)) > 0)
+                       ret = mtu;
+       }
 
 out:
        close(fd);
@@ -2002,138 +3032,11 @@ int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
                        link = iface->l3_dev.dev->ifindex;
        }
 
-       if (!strcmp(str, "sit")) {
-               if (system_add_proto_tunnel(name, IPPROTO_IPV6, link, tb) < 0)
-                       return -1;
-
-#ifdef SIOCADD6RD
-               if ((cur = tb[TUNNEL_ATTR_6RD_PREFIX])) {
-                       unsigned int mask;
-                       struct ip_tunnel_6rd p6;
-
-                       memset(&p6, 0, sizeof(p6));
-
-                       if (!parse_ip_and_netmask(AF_INET6, blobmsg_data(cur),
-                                               &p6.prefix, &mask) || mask > 128)
-                               return -EINVAL;
-                       p6.prefixlen = mask;
-
-                       if ((cur = tb[TUNNEL_ATTR_6RD_RELAY_PREFIX])) {
-                               if (!parse_ip_and_netmask(AF_INET, blobmsg_data(cur),
-                                                       &p6.relay_prefix, &mask) || mask > 32)
-                                       return -EINVAL;
-                               p6.relay_prefixlen = mask;
-                       }
-
-                       if (tunnel_ioctl(name, SIOCADD6RD, &p6) < 0) {
-                               __system_del_ip_tunnel(name, tb);
-                               return -1;
-                       }
-               }
-#endif
+       if (!strcmp(str, "sit"))
+               return system_add_sit_tunnel(name, link, tb);
 #ifdef IFLA_IPTUN_MAX
-       } else if (!strcmp(str, "ipip6")) {
-               struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
-                               NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
-               struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC };
-               int ret = 0;
-
-               if (!nlm)
-                       return -1;
-
-               nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
-               nla_put_string(nlm, IFLA_IFNAME, name);
-
-               if (link)
-                       nla_put_u32(nlm, IFLA_LINK, link);
-
-               struct nlattr *linkinfo = nla_nest_start(nlm, IFLA_LINKINFO);
-               if (!linkinfo) {
-                       ret = -ENOMEM;
-                       goto failure;
-               }
-               nla_put_string(nlm, IFLA_INFO_KIND, "ip6tnl");
-               struct nlattr *infodata = nla_nest_start(nlm, IFLA_INFO_DATA);
-               if (!infodata) {
-                       ret = -ENOMEM;
-                       goto failure;
-               }
-
-               if (link)
-                       nla_put_u32(nlm, IFLA_IPTUN_LINK, link);
-
-               nla_put_u8(nlm, IFLA_IPTUN_PROTO, IPPROTO_IPIP);
-               nla_put_u8(nlm, IFLA_IPTUN_TTL, (ttl) ? ttl : 64);
-               nla_put_u8(nlm, IFLA_IPTUN_ENCAP_LIMIT, 4);
-
-               struct in6_addr in6buf;
-               if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
-                       if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
-                               ret = -EINVAL;
-                               goto failure;
-                       }
-                       nla_put(nlm, IFLA_IPTUN_LOCAL, sizeof(in6buf), &in6buf);
-               }
-
-               if ((cur = tb[TUNNEL_ATTR_REMOTE])) {
-                       if (inet_pton(AF_INET6, blobmsg_data(cur), &in6buf) < 1) {
-                               ret = -EINVAL;
-                               goto failure;
-                       }
-                       nla_put(nlm, IFLA_IPTUN_REMOTE, sizeof(in6buf), &in6buf);
-               }
-
-#ifdef IFLA_IPTUN_FMR_MAX
-               if ((cur = tb[TUNNEL_ATTR_FMRS])) {
-                       struct nlattr *fmrs = nla_nest_start(nlm, IFLA_IPTUN_FMRS);
-
-                       struct blob_attr *fmr;
-                       unsigned rem, fmrcnt = 0;
-                       blobmsg_for_each_attr(fmr, cur, rem) {
-                               if (blobmsg_type(fmr) != BLOBMSG_TYPE_STRING)
-                                       continue;
-
-                               unsigned ip4len, ip6len, ealen, offset = 6;
-                               char ip6buf[48];
-                               char ip4buf[16];
-
-                               if (sscanf(blobmsg_get_string(fmr), "%47[^/]/%u,%15[^/]/%u,%u,%u",
-                                               ip6buf, &ip6len, ip4buf, &ip4len, &ealen, &offset) < 5) {
-                                       ret = -EINVAL;
-                                       goto failure;
-                               }
-
-                               struct in6_addr ip6prefix;
-                               struct in_addr ip4prefix;
-                               if (inet_pton(AF_INET6, ip6buf, &ip6prefix) != 1 ||
-                                               inet_pton(AF_INET, ip4buf, &ip4prefix) != 1) {
-                                       ret = -EINVAL;
-                                       goto failure;
-                               }
-
-                               struct nlattr *rule = nla_nest_start(nlm, ++fmrcnt);
-
-                               nla_put(nlm, IFLA_IPTUN_FMR_IP6_PREFIX, sizeof(ip6prefix), &ip6prefix);
-                               nla_put(nlm, IFLA_IPTUN_FMR_IP4_PREFIX, sizeof(ip4prefix), &ip4prefix);
-                               nla_put_u8(nlm, IFLA_IPTUN_FMR_IP6_PREFIX_LEN, ip6len);
-                               nla_put_u8(nlm, IFLA_IPTUN_FMR_IP4_PREFIX_LEN, ip4len);
-                               nla_put_u8(nlm, IFLA_IPTUN_FMR_EA_LEN, ealen);
-                               nla_put_u8(nlm, IFLA_IPTUN_FMR_OFFSET, offset);
-
-                               nla_nest_end(nlm, rule);
-                       }
-
-                       nla_nest_end(nlm, fmrs);
-               }
-#endif
-
-               nla_nest_end(nlm, infodata);
-               nla_nest_end(nlm, linkinfo);
-
-               return system_rtnl_call(nlm);
-failure:
-               nlmsg_free(nlm);
-               return ret;
+       else if (!strcmp(str, "ipip6")) {
+               return system_add_ip6_tunnel(name, link, tb);
        } else if (!strcmp(str, "greip")) {
                return system_add_gre_tunnel(name, "gre", link, tb, false);
        } else if (!strcmp(str, "gretapip"))  {
@@ -2142,6 +3045,18 @@ failure:
                return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
        } else if (!strcmp(str, "gretapip6")) {
                return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
+#ifdef IFLA_VTI_MAX
+       } else if (!strcmp(str, "vtiip")) {
+               return system_add_vti_tunnel(name, "vti", link, tb, false);
+       } else if (!strcmp(str, "vtiip6")) {
+               return system_add_vti_tunnel(name, "vti6", link, tb, true);
+#endif
+#ifdef IFLA_VXLAN_MAX
+       } else if(!strcmp(str, "vxlan")) {
+               return system_add_vxlan(name, link, tb, false);
+       } else if(!strcmp(str, "vxlan6")) {
+               return system_add_vxlan(name, link, tb, true);
+#endif
 #endif
        } else if (!strcmp(str, "ipip")) {
                return system_add_proto_tunnel(name, IPPROTO_IPIP, link, tb);