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Merge branch 'fdn-mods'
[l2tpns.git] / l2tpns.c
diff --git a/l2tpns.c b/l2tpns.c
index 8224275..0721f5c 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,8 +4,6 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.176 2011/01/20 12:48:40 bodea Exp $";
-
 #include <arpa/inet.h>
 #include <assert.h>
 #include <errno.h>
 #include <arpa/inet.h>
 #include <assert.h>
 #include <errno.h>
@@ -14,7 +12,6 @@ char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.176 2011/01/20 12:48:40 bodea Exp
 #define SYSLOG_NAMES
 #include <syslog.h>
 #include <malloc.h>
 #define SYSLOG_NAMES
 #include <syslog.h>
 #include <malloc.h>
-#include <math.h>
 #include <net/route.h>
 #include <sys/mman.h>
 #include <netdb.h>
 #include <net/route.h>
 #include <sys/mman.h>
 #include <netdb.h>
@@ -31,7 +28,7 @@ char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.176 2011/01/20 12:48:40 bodea Exp
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <sys/wait.h>
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <sys/wait.h>
-#include <linux/if.h>
+#include <net/if.h>
 #include <stddef.h>
 #include <time.h>
 #include <dlfcn.h>
 #include <stddef.h>
 #include <time.h>
 #include <dlfcn.h>
@@ -70,7 +67,7 @@ int rand_fd = -1;             // Random data source
 int cluster_sockfd = -1;       // Intra-cluster communications socket.
 int epollfd = -1;              // event polling
 time_t basetime = 0;           // base clock
 int cluster_sockfd = -1;       // Intra-cluster communications socket.
 int epollfd = -1;              // event polling
 time_t basetime = 0;           // base clock
-char hostname[1000] = "";      // us.
+char hostname[MAXHOSTNAME] = "";       // us.
 static int tunidx;             // ifr_ifindex of tun device
 int nlseqnum = 0;              // netlink sequence number
 int min_initok_nlseqnum = 0;   // minimun seq number for messages after init is ok
 static int tunidx;             // ifr_ifindex of tun device
 int nlseqnum = 0;              // netlink sequence number
 int min_initok_nlseqnum = 0;   // minimun seq number for messages after init is ok
@@ -160,6 +157,10 @@ config_descriptt config_values[] = {
        CONFIG("cluster_hb_timeout", cluster_hb_timeout, INT),
        CONFIG("cluster_master_min_adv", cluster_master_min_adv, INT),
        CONFIG("ipv6_prefix", ipv6_prefix, IPv6),
        CONFIG("cluster_hb_timeout", cluster_hb_timeout, INT),
        CONFIG("cluster_master_min_adv", cluster_master_min_adv, INT),
        CONFIG("ipv6_prefix", ipv6_prefix, IPv6),
+       CONFIG("cli_bind_address", cli_bind_address, IPv4),
+       CONFIG("hostname", hostname, STRING),
+       CONFIG("nexthop_address", nexthop_address, IPv4),
+       CONFIG("nexthop6_address", nexthop6_address, IPv6),
        { NULL, 0, 0, 0 },
 };
 
        { NULL, 0, 0, 0 },
 };
 
@@ -167,8 +168,6 @@ static char *plugin_functions[] = {
        NULL,
        "plugin_pre_auth",
        "plugin_post_auth",
        NULL,
        "plugin_pre_auth",
        "plugin_post_auth",
-       "plugin_packet_rx",
-       "plugin_packet_tx",
        "plugin_timer",
        "plugin_new_session",
        "plugin_kill_session",
        "plugin_timer",
        "plugin_new_session",
        "plugin_kill_session",
@@ -200,6 +199,8 @@ struct Tstats *_statistics = NULL;
 struct Tringbuffer *ringbuffer = NULL;
 #endif
 
 struct Tringbuffer *ringbuffer = NULL;
 #endif
 
+static ssize_t netlink_send(struct nlmsghdr *nh);
+static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen);
 static void cache_ipmap(in_addr_t ip, sessionidt s);
 static void uncache_ipmap(in_addr_t ip);
 static void cache_ipv6map(struct in6_addr ip, int prefixlen, sessionidt s);
 static void cache_ipmap(in_addr_t ip, sessionidt s);
 static void uncache_ipmap(in_addr_t ip);
 static void cache_ipv6map(struct in6_addr ip, int prefixlen, sessionidt s);
@@ -419,43 +420,65 @@ void random_data(uint8_t *buf, int len)
 // via BGP if enabled, and stuffs it into the
 // 'sessionbyip' cache.
 //
 // via BGP if enabled, and stuffs it into the
 // 'sessionbyip' cache.
 //
-// 'ip' and 'mask' must be in _host_ order.
+// 'ip' must be in _host_ order.
 //
 //
-static void routeset(sessionidt s, in_addr_t ip, in_addr_t mask, in_addr_t gw, int add)
+static void routeset(sessionidt s, in_addr_t ip, int prefixlen, in_addr_t gw, int add)
 {
 {
-       struct rtentry r;
+       struct {
+               struct nlmsghdr nh;
+               struct rtmsg rt;
+               char buf[32];
+       } req;
        int i;
        int i;
+       in_addr_t n_ip;
+
+       if (!prefixlen) prefixlen = 32;
+
+       ip &= 0xffffffff << (32 - prefixlen);;  // Force the ip to be the first one in the route.
+
+       memset(&req, 0, sizeof(req));
+
+       if (add)
+       {
+               req.nh.nlmsg_type = RTM_NEWROUTE;
+               req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE;
+       }
+       else
+       {
+               req.nh.nlmsg_type = RTM_DELROUTE;
+               req.nh.nlmsg_flags = NLM_F_REQUEST;
+       }
 
 
-       if (!mask) mask = 0xffffffff;
+       req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt));
 
 
-       ip &= mask;             // Force the ip to be the first one in the route.
+       req.rt.rtm_family = AF_INET;
+       req.rt.rtm_dst_len = prefixlen;
+       req.rt.rtm_table = RT_TABLE_MAIN;
+       req.rt.rtm_protocol = 42;
+       req.rt.rtm_scope = RT_SCOPE_LINK;
+       req.rt.rtm_type = RTN_UNICAST;
 
 
-       memset(&r, 0, sizeof(r));
-       r.rt_dev = config->tundevice;
-       r.rt_dst.sa_family = AF_INET;
-       *(uint32_t *) & (((struct sockaddr_in *) &r.rt_dst)->sin_addr.s_addr) = htonl(ip);
-       r.rt_gateway.sa_family = AF_INET;
-       *(uint32_t *) & (((struct sockaddr_in *) &r.rt_gateway)->sin_addr.s_addr) = htonl(gw);
-       r.rt_genmask.sa_family = AF_INET;
-       *(uint32_t *) & (((struct sockaddr_in *) &r.rt_genmask)->sin_addr.s_addr) = htonl(mask);
-       r.rt_flags = (RTF_UP | RTF_STATIC);
+       netlink_addattr(&req.nh, RTA_OIF, &tunidx, sizeof(int));
+       n_ip = htonl(ip);
+       netlink_addattr(&req.nh, RTA_DST, &n_ip, sizeof(n_ip));
        if (gw)
        if (gw)
-               r.rt_flags |= RTF_GATEWAY;
-       else if (mask == 0xffffffff)
-               r.rt_flags |= RTF_HOST;
+       {
+               n_ip = htonl(gw);
+               netlink_addattr(&req.nh, RTA_GATEWAY, &n_ip, sizeof(n_ip));
+       }
 
 
-       LOG(1, s, 0, "Route %s %s/%s%s%s\n", add ? "add" : "del",
-           fmtaddr(htonl(ip), 0), fmtaddr(htonl(mask), 1),
+       LOG(1, s, session[s].tunnel, "Route %s %s/%d%s%s\n", add ? "add" : "del",
+           fmtaddr(htonl(ip), 0), prefixlen,
            gw ? " via" : "", gw ? fmtaddr(htonl(gw), 2) : "");
 
            gw ? " via" : "", gw ? fmtaddr(htonl(gw), 2) : "");
 
-       if (ioctl(ifrfd, add ? SIOCADDRT : SIOCDELRT, (void *) &r) < 0)
-               LOG(0, 0, 0, "routeset() error in ioctl: %s\n", strerror(errno));
+       if (netlink_send(&req.nh) < 0)
+               LOG(0, 0, 0, "routeset() error in sending netlink message: %s\n", strerror(errno));
 
 #ifdef BGP
        if (add)
 
 #ifdef BGP
        if (add)
-               bgp_add_route(htonl(ip), htonl(mask));
+               bgp_add_route(htonl(ip), prefixlen);
        else
        else
-               bgp_del_route(htonl(ip), htonl(mask));
+               bgp_del_route(htonl(ip), prefixlen);
 #endif /* BGP */
 
                // Add/Remove the IPs to the 'sessionbyip' cache.
 #endif /* BGP */
 
                // Add/Remove the IPs to the 'sessionbyip' cache.
@@ -471,40 +494,68 @@ static void routeset(sessionidt s, in_addr_t ip, in_addr_t mask, in_addr_t gw, i
                if (!add)       // Are we deleting a route?
                        s = 0;  // Caching the session as '0' is the same as uncaching.
 
                if (!add)       // Are we deleting a route?
                        s = 0;  // Caching the session as '0' is the same as uncaching.
 
-               for (i = ip; (i&mask) == (ip&mask) ; ++i)
+               for (i = ip; i < ip+(1<<(32-prefixlen)) ; ++i)
                        cache_ipmap(i, s);
        }
 }
 
 void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add)
 {
                        cache_ipmap(i, s);
        }
 }
 
 void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add)
 {
-       struct in6_rtmsg rt;
+       struct {
+               struct nlmsghdr nh;
+               struct rtmsg rt;
+               char buf[64];
+       } req;
+       int metric;
        char ipv6addr[INET6_ADDRSTRLEN];
 
        char ipv6addr[INET6_ADDRSTRLEN];
 
-       if (ifr6fd < 0)
+       if (!config->ipv6_prefix.s6_addr[0])
        {
                LOG(0, 0, 0, "Asked to set IPv6 route, but IPv6 not setup.\n");
                return;
        }
 
        {
                LOG(0, 0, 0, "Asked to set IPv6 route, but IPv6 not setup.\n");
                return;
        }
 
-       memset(&rt, 0, sizeof(rt));
+       memset(&req, 0, sizeof(req));
 
 
-       memcpy(&rt.rtmsg_dst, &ip, sizeof(struct in6_addr));
-       rt.rtmsg_dst_len = prefixlen;
-       rt.rtmsg_metric = 1;
-       rt.rtmsg_flags = RTF_UP;
-       rt.rtmsg_ifindex = tunidx;
+       if (add)
+       {
+               req.nh.nlmsg_type = RTM_NEWROUTE;
+               req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE;
+       }
+       else
+       {
+               req.nh.nlmsg_type = RTM_DELROUTE;
+               req.nh.nlmsg_flags = NLM_F_REQUEST;
+       }
+
+       req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt));
+
+       req.rt.rtm_family = AF_INET6;
+       req.rt.rtm_dst_len = prefixlen;
+       req.rt.rtm_table = RT_TABLE_MAIN;
+       req.rt.rtm_protocol = 42;
+       req.rt.rtm_scope = RT_SCOPE_LINK;
+       req.rt.rtm_type = RTN_UNICAST;
+
+       netlink_addattr(&req.nh, RTA_OIF, &tunidx, sizeof(int));
+       netlink_addattr(&req.nh, RTA_DST, &ip, sizeof(ip));
+       metric = 1;
+       netlink_addattr(&req.nh, RTA_METRICS, &metric, sizeof(metric));
 
 
-       LOG(1, 0, 0, "Route %s %s/%d\n",
+       LOG(1, s, session[s].tunnel, "Route %s %s/%d\n",
            add ? "add" : "del",
            inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN),
            prefixlen);
 
            add ? "add" : "del",
            inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN),
            prefixlen);
 
-       if (ioctl(ifr6fd, add ? SIOCADDRT : SIOCDELRT, (void *) &rt) < 0)
-               LOG(0, 0, 0, "route6set() error in ioctl: %s\n",
-                               strerror(errno));
+       if (netlink_send(&req.nh) < 0)
+               LOG(0, 0, 0, "route6set() error in sending netlink message: %s\n", strerror(errno));
 
 
-       // FIXME: need to add BGP routing (RFC2858)
+#ifdef BGP
+       if (add)
+               bgp_add_route6(ip, prefixlen);
+       else
+               bgp_del_route6(ip, prefixlen);
+#endif /* BGP */
 
        if (s)
        {
 
        if (s)
        {
@@ -576,6 +627,19 @@ static ssize_t netlink_recv(void *buf, ssize_t len)
        return recvmsg(nlfd, &msg, 0);
 }
 
        return recvmsg(nlfd, &msg, 0);
 }
 
+/* adapted from iproute2 */
+static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen)
+{
+       int len = RTA_LENGTH(alen);
+       struct rtattr *rta;
+
+       rta = (struct rtattr *)(((void *)nh) + NLMSG_ALIGN(nh->nlmsg_len));
+       rta->rta_type = type;
+       rta->rta_len = len;
+       memcpy(RTA_DATA(rta), data, alen);
+       nh->nlmsg_len = NLMSG_ALIGN(nh->nlmsg_len) + RTA_ALIGN(len);
+}
+
 // messages corresponding to different phases seq number
 static char *tun_nl_phase_msg[] = {
        "initialized",
 // messages corresponding to different phases seq number
 static char *tun_nl_phase_msg[] = {
        "initialized",
@@ -590,7 +654,6 @@ static char *tun_nl_phase_msg[] = {
 // Set up TUN interface
 static void inittun(void)
 {
 // Set up TUN interface
 static void inittun(void)
 {
-       struct ifinfomsg ifinfo;
        struct ifreq ifr;
 
        memset(&ifr, 0, sizeof(ifr));
        struct ifreq ifr;
 
        memset(&ifr, 0, sizeof(ifr));
@@ -611,50 +674,16 @@ static void inittun(void)
                LOG(0, 0, 0, "Can't set tun interface: %s\n", strerror(errno));
                exit(1);
        }
                LOG(0, 0, 0, "Can't set tun interface: %s\n", strerror(errno));
                exit(1);
        }
-       assert(strlen(ifr.ifr_name) < sizeof(config->tundevice));
-       strncpy(config->tundevice, ifr.ifr_name, sizeof(config->tundevice) - 1);
+       assert(strlen(ifr.ifr_name) < sizeof(config->tundevice) - 1);
+       strncpy(config->tundevice, ifr.ifr_name, sizeof(config->tundevice));
 
 
+       tunidx = if_nametoindex(config->tundevice);
+       if (tunidx == 0)
        {
        {
-               // get the interface index
-               struct {
-                       struct nlmsghdr nh;
-                       struct ifinfomsg ifinfo __attribute__ ((aligned(NLMSG_ALIGNTO)));
-                       struct rtattr ifname_rta __attribute__ ((aligned(RTA_ALIGNTO)));
-                       char ifname[IFNAMSIZ];
-               } req;
-               char buf[4096];
-               ssize_t len;
-               struct nlmsghdr *resp_nh;
-
-               req.nh.nlmsg_type = RTM_GETLINK;
-               req.nh.nlmsg_flags = NLM_F_REQUEST;
-
-               req.ifinfo.ifi_family = AF_UNSPEC; // as the man says
-
-               req.ifname_rta.rta_len = RTA_LENGTH(strlen(config->tundevice)+1);
-               req.ifname_rta.rta_type = IFLA_IFNAME;
-               strncpy(req.ifname, config->tundevice, IFNAMSIZ-1);
-
-               req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifinfo)
-                               + req.ifname_rta.rta_len);
-
-               if(netlink_send(&req.nh) < 0 || (len = netlink_recv(buf, sizeof(buf))) < 0)
-               {
-                       LOG(0, 0, 0, "Error getting tun ifindex: %s\n", strerror(errno));
-                       exit(1);
-               }
-
-               resp_nh = (struct nlmsghdr *)buf;
-               if (!NLMSG_OK (resp_nh, len))
-               {
-                       LOG(0, 0, 0, "Malformed answer getting tun ifindex %ld\n", len);
-                       exit(1);
-               }
-
-               memcpy(&ifinfo, NLMSG_DATA(resp_nh), sizeof(ifinfo));
-               // got index
-               tunidx = ifinfo.ifi_index;
+               LOG(0, 0, 0, "Can't get tun interface index\n");
+               exit(1);
        }
        }
+
        {
                struct {
                        // interface setting
        {
                struct {
                        // interface setting
@@ -662,136 +691,96 @@ static void inittun(void)
                        union {
                                struct ifinfomsg ifinfo;
                                struct ifaddrmsg ifaddr;
                        union {
                                struct ifinfomsg ifinfo;
                                struct ifaddrmsg ifaddr;
-                       } ifmsg __attribute__ ((aligned(NLMSG_ALIGNTO)));
+                       } ifmsg;
                        char rtdata[32]; // 32 should be enough
                } req;
                        char rtdata[32]; // 32 should be enough
                } req;
-               struct {
-                       struct rtattr rta;
-                       uint32_t u32 __attribute__ ((aligned(RTA_ALIGNTO)));;
-               } u32_attr;
-               struct {
-                       struct rtattr rta;
-                       struct in_addr addr __attribute__ ((aligned(RTA_ALIGNTO)));;
-               } ipv4_attr;
-               struct {
-                       struct rtattr rta;
-                       struct in6_addr addr6 __attribute__ ((aligned(RTA_ALIGNTO)));;
-               } ipv6_attr;
-               char *buf_ptr;
+               uint32_t txqlen, mtu;
+               in_addr_t ip;
 
                memset(&req, 0, sizeof(req));
 
 
                memset(&req, 0, sizeof(req));
 
-               req.nh.nlmsg_type = RTM_SETLINK;
+               req.nh.nlmsg_type = RTM_NEWLINK;
                req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_MULTI;
                req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_MULTI;
+               req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifinfo));
 
 
-               req.ifmsg.ifinfo = ifinfo;
+               req.ifmsg.ifinfo.ifi_family = AF_UNSPEC;
+               req.ifmsg.ifinfo.ifi_index = tunidx;
                req.ifmsg.ifinfo.ifi_flags |= IFF_UP; // set interface up
                req.ifmsg.ifinfo.ifi_change = IFF_UP; // only change this flag
 
                req.ifmsg.ifinfo.ifi_flags |= IFF_UP; // set interface up
                req.ifmsg.ifinfo.ifi_change = IFF_UP; // only change this flag
 
-               buf_ptr = NLMSG_DATA(&req.nh) + sizeof(req.ifmsg.ifinfo);
-
-               u32_attr.rta.rta_len = RTA_LENGTH(sizeof(u32_attr.u32));
-               u32_attr.rta.rta_type = IFLA_TXQLEN;
                /* Bump up the qlen to deal with bursts from the network */
                /* Bump up the qlen to deal with bursts from the network */
-               u32_attr.u32 = 1000;
-               memcpy(buf_ptr, &u32_attr, sizeof(u32_attr));
-
-               buf_ptr += RTA_ALIGN(u32_attr.rta.rta_len);
-
-               u32_attr.rta.rta_len = RTA_LENGTH(sizeof(u32_attr.u32));
-               u32_attr.rta.rta_type = IFLA_MTU;
+               txqlen = 1000;
+               netlink_addattr(&req.nh, IFLA_TXQLEN, &txqlen, sizeof(txqlen));
                /* set MTU to modem MRU */
                /* set MTU to modem MRU */
-               u32_attr.u32 = MRU;
-               memcpy(buf_ptr, &u32_attr, sizeof(u32_attr));
-
-               req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifinfo)
-                               + u32_attr.rta.rta_len * 2);
+               mtu = MRU;
+               netlink_addattr(&req.nh, IFLA_MTU, &mtu, sizeof(mtu));
 
                if (netlink_send(&req.nh) < 0)
 
                if (netlink_send(&req.nh) < 0)
-               {
-                       LOG(0, 0, 0, "Error setting up tun device interface: %s\n", strerror(errno));
-                       exit(1);
-               }
+                       goto senderror;
 
                memset(&req, 0, sizeof(req));
 
                req.nh.nlmsg_type = RTM_NEWADDR;
 
                memset(&req, 0, sizeof(req));
 
                req.nh.nlmsg_type = RTM_NEWADDR;
-               req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_MULTI;
+               req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
+               req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr));
 
                req.ifmsg.ifaddr.ifa_family = AF_INET;
                req.ifmsg.ifaddr.ifa_prefixlen = 32;
 
                req.ifmsg.ifaddr.ifa_family = AF_INET;
                req.ifmsg.ifaddr.ifa_prefixlen = 32;
-               req.ifmsg.ifaddr.ifa_index = ifinfo.ifi_index;
-
-               ipv4_attr.rta.rta_len = RTA_LENGTH(sizeof(ipv4_attr.addr));
-               ipv4_attr.rta.rta_type = IFA_LOCAL;
-               ipv4_attr.addr.s_addr = config->bind_address ?
-                       config->bind_address : 0x01010101; // 1.1.1.1
-               memcpy(NLMSG_DATA(&req.nh) + sizeof(req.ifmsg.ifaddr), &ipv4_attr, sizeof(ipv4_attr));
+               req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
+               req.ifmsg.ifaddr.ifa_index = tunidx;
 
 
-               req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr)
-                               + ipv4_attr.rta.rta_len);
+               if (config->bind_address)
+                       ip = config->bind_address;
+               else
+                       ip = 0x01010101; // 1.1.1.1
+               netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip));
 
                if (netlink_send(&req.nh) < 0)
 
                if (netlink_send(&req.nh) < 0)
-               {
-                       LOG(0, 0, 0, "Error setting up tun device IPv4 address: %s\n", strerror(errno));
-                       exit(1);
-               }
+                       goto senderror;
 
                // Only setup IPv6 on the tun device if we have a configured prefix
                if (config->ipv6_prefix.s6_addr[0]) {
 
                // Only setup IPv6 on the tun device if we have a configured prefix
                if (config->ipv6_prefix.s6_addr[0]) {
+                       struct in6_addr ip6;
+
                        memset(&req, 0, sizeof(req));
 
                        req.nh.nlmsg_type = RTM_NEWADDR;
                        memset(&req, 0, sizeof(req));
 
                        req.nh.nlmsg_type = RTM_NEWADDR;
-                       req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_MULTI;
+                       req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
+                       req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr));
 
                        req.ifmsg.ifaddr.ifa_family = AF_INET6;
                        req.ifmsg.ifaddr.ifa_prefixlen = 64;
                        req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_LINK;
 
                        req.ifmsg.ifaddr.ifa_family = AF_INET6;
                        req.ifmsg.ifaddr.ifa_prefixlen = 64;
                        req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_LINK;
-                       req.ifmsg.ifaddr.ifa_index = ifinfo.ifi_index;
+                       req.ifmsg.ifaddr.ifa_index = tunidx;
 
 
-                       ipv6_attr.rta.rta_len = RTA_LENGTH(sizeof(ipv6_attr.addr6));
-                       ipv6_attr.rta.rta_type = IFA_LOCAL;
                        // Link local address is FE80::1
                        // Link local address is FE80::1
-                       memset(&ipv6_attr.addr6, 0, sizeof(ipv6_attr.addr6));
-                       ipv6_attr.addr6.s6_addr[0] = 0xFE;
-                       ipv6_attr.addr6.s6_addr[1] = 0x80;
-                       ipv6_attr.addr6.s6_addr[15] = 1;
-                       memcpy(NLMSG_DATA(&req.nh) + sizeof(req.ifmsg.ifaddr), &ipv6_attr, sizeof(ipv6_attr));
-
-                       req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr)
-                                       + ipv6_attr.rta.rta_len);
+                       memset(&ip6, 0, sizeof(ip6));
+                       ip6.s6_addr[0] = 0xFE;
+                       ip6.s6_addr[1] = 0x80;
+                       ip6.s6_addr[15] = 1;
+                       netlink_addattr(&req.nh, IFA_LOCAL, &ip6, sizeof(ip6));
 
                        if (netlink_send(&req.nh) < 0)
 
                        if (netlink_send(&req.nh) < 0)
-                       {
-                               LOG(0, 0, 0, "Error setting up tun device IPv6 LL address: %s\n", strerror(errno));
-                               exit(1);
-                       }
+                               goto senderror;
 
                        memset(&req, 0, sizeof(req));
 
                        req.nh.nlmsg_type = RTM_NEWADDR;
 
                        memset(&req, 0, sizeof(req));
 
                        req.nh.nlmsg_type = RTM_NEWADDR;
-                       req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_MULTI;
+                       req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
+                       req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr));
 
                        req.ifmsg.ifaddr.ifa_family = AF_INET6;
                        req.ifmsg.ifaddr.ifa_prefixlen = 64;
                        req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
 
                        req.ifmsg.ifaddr.ifa_family = AF_INET6;
                        req.ifmsg.ifaddr.ifa_prefixlen = 64;
                        req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
-                       req.ifmsg.ifaddr.ifa_index = ifinfo.ifi_index;
+                       req.ifmsg.ifaddr.ifa_index = tunidx;
 
 
-                       ipv6_attr.rta.rta_len = RTA_LENGTH(sizeof(ipv6_attr.addr6));
-                       ipv6_attr.rta.rta_type = IFA_LOCAL;
                        // Global address is prefix::1
                        // Global address is prefix::1
-                       ipv6_attr.addr6 = config->ipv6_prefix;
-                       ipv6_attr.addr6.s6_addr[15] = 1;
-                       memcpy(NLMSG_DATA(&req.nh) + sizeof(req.ifmsg.ifaddr), &ipv6_attr, sizeof(ipv6_attr));
-
-                       req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr)
-                                       + ipv6_attr.rta.rta_len);
+                       ip6 = config->ipv6_prefix;
+                       ip6.s6_addr[15] = 1;
+                       netlink_addattr(&req.nh, IFA_LOCAL, &ip6, sizeof(ip6));
 
                        if (netlink_send(&req.nh) < 0)
 
                        if (netlink_send(&req.nh) < 0)
-                       {
-                               LOG(0, 0, 0, "Error setting up tun device IPv6 global address: %s\n", strerror(errno));
-                               exit(1);
-                       }
+                               goto senderror;
                }
 
                memset(&req, 0, sizeof(req));
                }
 
                memset(&req, 0, sizeof(req));
@@ -800,10 +789,7 @@ static void inittun(void)
                req.nh.nlmsg_len = NLMSG_LENGTH(0);
 
                if (netlink_send(&req.nh) < 0)
                req.nh.nlmsg_len = NLMSG_LENGTH(0);
 
                if (netlink_send(&req.nh) < 0)
-               {
-                       LOG(0, 0, 0, "Error finishing setting up tun device: %s\n", strerror(errno));
-                       exit(1);
-               }
+                       goto senderror;
 
                // if we get an error for seqnum < min_initok_nlseqnum,
                // we must exit as initialization went wrong
 
                // if we get an error for seqnum < min_initok_nlseqnum,
                // we must exit as initialization went wrong
@@ -812,6 +798,12 @@ static void inittun(void)
                else
                        min_initok_nlseqnum = 3 + 1; // idx + if + addr
        }
                else
                        min_initok_nlseqnum = 3 + 1; // idx + if + addr
        }
+
+       return;
+
+senderror:
+       LOG(0, 0, 0, "Error while setting up tun device: %s\n", strerror(errno));
+       exit(1);
 }
 
 // set up UDP ports
 }
 
 // set up UDP ports
@@ -1468,75 +1460,76 @@ static void processipout(uint8_t *buf, int len)
                return;
        }
 
                return;
        }
 
-       // Add on L2TP header
-        {
-                bundleidt bid = 0;
-                if(session[s].bundle != 0 && bundle[session[s].bundle].num_of_links > 1)
-                {
-                        bid = session[s].bundle;
-                        s = bundle[bid].members[bundle[bid].current_ses = ++bundle[bid].current_ses % bundle[bid].num_of_links];
-                       t = session[s].tunnel;
-                       sp = &session[s];
-                        LOG(4, s, t, "MPPP: (1)Session number becomes: %d\n", s);
-                        if(len > MINFRAGLEN)
-                        {
-                                // Partition the packet to "bundle[b].num_of_links" fragments
-                               bundlet *b = &bundle[bid];
-                               uint32_t num_of_links = b->num_of_links;
-                                uint32_t fraglen = len / num_of_links;
-                               fraglen = (fraglen > session[s].mru ? session[s].mru : fraglen);
-                               uint32_t last_fraglen = fraglen + len % num_of_links;
-                               last_fraglen = (last_fraglen > session[s].mru ? len % num_of_links : last_fraglen);
-                               uint32_t remain = len;
-
-                               // send the first packet
-                                uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, fraglen, s, t, PPPIP, 0, bid, MP_BEGIN);
-                                if (!p) return;
-                                tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it...
-                               // statistics
-                               update_session_out_stat(s, sp, fraglen);
-                               remain -= fraglen;
-                               while (remain > last_fraglen)
-                               { 
-                                       s = b->members[b->current_ses = ++b->current_ses % num_of_links];
-                                       t = session[s].tunnel;
-                                       sp = &session[s];
-                                       LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s);
-                                       p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), fraglen, s, t, PPPIP, 0, bid, 0);
-                                       if (!p) return;
-                                       tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it...
-                                       update_session_out_stat(s, sp, fraglen);
-                                       remain -= fraglen;
-                               }
-                               // send the last fragment
-                               s = b->members[b->current_ses = ++b->current_ses % num_of_links];
+       if(session[s].bundle != 0 && bundle[session[s].bundle].num_of_links > 1)
+       {
+               // Add on L2TP header
+               bundleidt bid = session[s].bundle;
+               bundlet *b = &bundle[bid];
+
+               b->current_ses = (b->current_ses + 1) % b->num_of_links;
+               s = b->members[b->current_ses];
+               t = session[s].tunnel;
+               sp = &session[s];
+               LOG(4, s, t, "MPPP: (1)Session number becomes: %d\n", s);
+               if(len > MINFRAGLEN)
+               {
+                       // Partition the packet to "bundle[b].num_of_links" fragments
+                       uint32_t num_of_links = b->num_of_links;
+                       uint32_t fraglen = len / num_of_links;
+                       fraglen = (fraglen > session[s].mru ? session[s].mru : fraglen);
+                       uint32_t last_fraglen = fraglen + len % num_of_links;
+                       last_fraglen = (last_fraglen > session[s].mru ? len % num_of_links : last_fraglen);
+                       uint32_t remain = len;
+
+                       // send the first packet
+                       uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, fraglen, s, t, PPPIP, 0, bid, MP_BEGIN);
+                       if (!p) return;
+                       tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it...
+                       // statistics
+                       update_session_out_stat(s, sp, fraglen);
+                       remain -= fraglen;
+                       while (remain > last_fraglen)
+                       { 
+                               b->current_ses = (b->current_ses + 1) % num_of_links;
+                               s = b->members[b->current_ses];
                                t = session[s].tunnel;
                                sp = &session[s];
                                t = session[s].tunnel;
                                sp = &session[s];
-                                       LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s);
-                                       p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), remain, s, t, PPPIP, 0, bid, MP_END);
-                                       if (!p) return;
-                                       tunnelsend(fragbuf, remain + (p-fragbuf), t); // send it...
-                               update_session_out_stat(s, sp, remain);
-                               if (remain != last_fraglen)
-                                       LOG(3, s, t, "PROCESSIPOUT ERROR REMAIN != LAST_FRAGLEN, %d != %d\n", remain, last_fraglen);
-                        }
-                        else {
-                                // Send it as one frame
-                                uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, bid, MP_BOTH_BITS);
-                                if (!p) return;
-                                tunnelsend(fragbuf, len + (p-fragbuf), t); // send it...
-                               LOG(4, s, t, "MPPP: packet sent as one frame\n");
-                               update_session_out_stat(s, sp, len);
-                        }
-                }
-                else
-                {
-                        uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, 0, 0);
-                        if (!p) return;
-                        tunnelsend(fragbuf, len + (p-fragbuf), t); // send it...
+                               LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s);
+                               p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), fraglen, s, t, PPPIP, 0, bid, 0);
+                               if (!p) return;
+                               tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it...
+                               update_session_out_stat(s, sp, fraglen);
+                               remain -= fraglen;
+                       }
+                       // send the last fragment
+                       b->current_ses = (b->current_ses + 1) % num_of_links;
+                       s = b->members[b->current_ses];
+                       t = session[s].tunnel;
+                       sp = &session[s];
+                       LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s);
+                       p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), remain, s, t, PPPIP, 0, bid, MP_END);
+                       if (!p) return;
+                       tunnelsend(fragbuf, remain + (p-fragbuf), t); // send it...
+                       update_session_out_stat(s, sp, remain);
+                       if (remain != last_fraglen)
+                               LOG(3, s, t, "PROCESSIPOUT ERROR REMAIN != LAST_FRAGLEN, %d != %d\n", remain, last_fraglen);
+               }
+               else {
+                       // Send it as one frame
+                       uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, bid, MP_BOTH_BITS);
+                       if (!p) return;
+                       tunnelsend(fragbuf, len + (p-fragbuf), t); // send it...
+                       LOG(4, s, t, "MPPP: packet sent as one frame\n");
                        update_session_out_stat(s, sp, len);
                        update_session_out_stat(s, sp, len);
-                }
-        }
+               }
+       }
+       else
+       {
+               uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, 0, 0);
+               if (!p) return;
+               tunnelsend(fragbuf, len + (p-fragbuf), t); // send it...
+               update_session_out_stat(s, sp, len);
+       }
 
        // Snooping this session, send it to intercept box
        if (sp->snoop_ip && sp->snoop_port)
 
        // Snooping this session, send it to intercept box
        if (sp->snoop_ip && sp->snoop_port)
@@ -1616,7 +1609,10 @@ static void processipv6out(uint8_t * buf, int len)
        if (session[s].bundle && bundle[session[s].bundle].num_of_links > 1)
        {
                bundleidt bid = session[s].bundle;
        if (session[s].bundle && bundle[session[s].bundle].num_of_links > 1)
        {
                bundleidt bid = session[s].bundle;
-               s = bundle[bid].members[bundle[bid].current_ses = ++bundle[bid].current_ses % bundle[bid].num_of_links];
+               bundlet *b = &bundle[bid];
+
+               b->current_ses = (b->current_ses + 1) % b->num_of_links;
+               s = b->members[b->current_ses];
                LOG(3, s, session[s].tunnel, "MPPP: Session number becomes: %u\n", s);
        }
        t = session[s].tunnel;
                LOG(3, s, session[s].tunnel, "MPPP: Session number becomes: %u\n", s);
        }
        t = session[s].tunnel;
@@ -1671,7 +1667,6 @@ static void send_ipout(sessionidt s, uint8_t *buf, int len)
 {
        sessiont *sp;
        tunnelidt t;
 {
        sessiont *sp;
        tunnelidt t;
-       in_addr_t ip;
 
        uint8_t b[MAXETHER + 20];
 
 
        uint8_t b[MAXETHER + 20];
 
@@ -1685,8 +1680,6 @@ static void send_ipout(sessionidt s, uint8_t *buf, int len)
        buf += 4;
        len -= 4;
 
        buf += 4;
        len -= 4;
 
-       ip = *(in_addr_t *)(buf + 16);
-
        if (!session[s].ip)
                return;
 
        if (!session[s].ip)
                return;
 
@@ -1719,10 +1712,10 @@ static void send_ipout(sessionidt s, uint8_t *buf, int len)
 static void control16(controlt * c, uint16_t avp, uint16_t val, uint8_t m)
 {
        uint16_t l = (m ? 0x8008 : 0x0008);
 static void control16(controlt * c, uint16_t avp, uint16_t val, uint8_t m)
 {
        uint16_t l = (m ? 0x8008 : 0x0008);
-       *(uint16_t *) (c->buf + c->length + 0) = htons(l);
-       *(uint16_t *) (c->buf + c->length + 2) = htons(0);
-       *(uint16_t *) (c->buf + c->length + 4) = htons(avp);
-       *(uint16_t *) (c->buf + c->length + 6) = htons(val);
+       c->buf16[c->length/2 + 0] = htons(l);
+       c->buf16[c->length/2 + 1] = htons(0);
+       c->buf16[c->length/2 + 2] = htons(avp);
+       c->buf16[c->length/2 + 3] = htons(val);
        c->length += 8;
 }
 
        c->length += 8;
 }
 
@@ -1730,10 +1723,10 @@ static void control16(controlt * c, uint16_t avp, uint16_t val, uint8_t m)
 static void control32(controlt * c, uint16_t avp, uint32_t val, uint8_t m)
 {
        uint16_t l = (m ? 0x800A : 0x000A);
 static void control32(controlt * c, uint16_t avp, uint32_t val, uint8_t m)
 {
        uint16_t l = (m ? 0x800A : 0x000A);
-       *(uint16_t *) (c->buf + c->length + 0) = htons(l);
-       *(uint16_t *) (c->buf + c->length + 2) = htons(0);
-       *(uint16_t *) (c->buf + c->length + 4) = htons(avp);
-       *(uint32_t *) (c->buf + c->length + 6) = htonl(val);
+       c->buf16[c->length/2 + 0] = htons(l);
+       c->buf16[c->length/2 + 1] = htons(0);
+       c->buf16[c->length/2 + 2] = htons(avp);
+       *(uint32_t *) &c->buf[c->length + 6] = htonl(val);
        c->length += 10;
 }
 
        c->length += 10;
 }
 
@@ -1741,10 +1734,10 @@ static void control32(controlt * c, uint16_t avp, uint32_t val, uint8_t m)
 static void controls(controlt * c, uint16_t avp, char *val, uint8_t m)
 {
        uint16_t l = ((m ? 0x8000 : 0) + strlen(val) + 6);
 static void controls(controlt * c, uint16_t avp, char *val, uint8_t m)
 {
        uint16_t l = ((m ? 0x8000 : 0) + strlen(val) + 6);
-       *(uint16_t *) (c->buf + c->length + 0) = htons(l);
-       *(uint16_t *) (c->buf + c->length + 2) = htons(0);
-       *(uint16_t *) (c->buf + c->length + 4) = htons(avp);
-       memcpy(c->buf + c->length + 6, val, strlen(val));
+       c->buf16[c->length/2 + 0] = htons(l);
+       c->buf16[c->length/2 + 1] = htons(0);
+       c->buf16[c->length/2 + 2] = htons(avp);
+       memcpy(&c->buf[c->length + 6], val, strlen(val));
        c->length += 6 + strlen(val);
 }
 
        c->length += 6 + strlen(val);
 }
 
@@ -1752,10 +1745,10 @@ static void controls(controlt * c, uint16_t avp, char *val, uint8_t m)
 static void controlb(controlt * c, uint16_t avp, uint8_t *val, unsigned int len, uint8_t m)
 {
        uint16_t l = ((m ? 0x8000 : 0) + len + 6);
 static void controlb(controlt * c, uint16_t avp, uint8_t *val, unsigned int len, uint8_t m)
 {
        uint16_t l = ((m ? 0x8000 : 0) + len + 6);
-       *(uint16_t *) (c->buf + c->length + 0) = htons(l);
-       *(uint16_t *) (c->buf + c->length + 2) = htons(0);
-       *(uint16_t *) (c->buf + c->length + 4) = htons(avp);
-       memcpy(c->buf + c->length + 6, val, len);
+       c->buf16[c->length/2 + 0] = htons(l);
+       c->buf16[c->length/2 + 1] = htons(0);
+       c->buf16[c->length/2 + 2] = htons(avp);
+       memcpy(&c->buf[c->length + 6], val, len);
        c->length += 6 + len;
 }
 
        c->length += 6 + len;
 }
 
@@ -1772,7 +1765,7 @@ static controlt *controlnew(uint16_t mtype)
        }
        assert(c);
        c->next = 0;
        }
        assert(c);
        c->next = 0;
-       *(uint16_t *) (c->buf + 0) = htons(0xC802); // flags/ver
+       c->buf16[0] = htons(0xC802); // flags/ver
        c->length = 12;
        control16(c, 0, mtype, 1);
        return c;
        c->length = 12;
        control16(c, 0, mtype, 1);
        return c;
@@ -1782,26 +1775,26 @@ static controlt *controlnew(uint16_t mtype)
 // (ZLB send).
 static void controlnull(tunnelidt t)
 {
 // (ZLB send).
 static void controlnull(tunnelidt t)
 {
-       uint8_t buf[12];
+       uint16_t buf[6];
        if (tunnel[t].controlc) // Messages queued; They will carry the ack.
                return;
 
        if (tunnel[t].controlc) // Messages queued; They will carry the ack.
                return;
 
-       *(uint16_t *) (buf + 0) = htons(0xC802); // flags/ver
-       *(uint16_t *) (buf + 2) = htons(12); // length
-       *(uint16_t *) (buf + 4) = htons(tunnel[t].far); // tunnel
-       *(uint16_t *) (buf + 6) = htons(0); // session
-       *(uint16_t *) (buf + 8) = htons(tunnel[t].ns); // sequence
-       *(uint16_t *) (buf + 10) = htons(tunnel[t].nr); // sequence
-       tunnelsend(buf, 12, t);
+       buf[0] = htons(0xC802); // flags/ver
+       buf[1] = htons(12); // length
+       buf[2] = htons(tunnel[t].far); // tunnel
+       buf[3] = htons(0); // session
+       buf[4] = htons(tunnel[t].ns); // sequence
+       buf[5] = htons(tunnel[t].nr); // sequence
+       tunnelsend((uint8_t *)buf, 12, t);
 }
 
 // add a control message to a tunnel, and send if within window
 static void controladd(controlt *c, sessionidt far, tunnelidt t)
 {
 }
 
 // add a control message to a tunnel, and send if within window
 static void controladd(controlt *c, sessionidt far, tunnelidt t)
 {
-       *(uint16_t *) (c->buf + 2) = htons(c->length); // length
-       *(uint16_t *) (c->buf + 4) = htons(tunnel[t].far); // tunnel
-       *(uint16_t *) (c->buf + 6) = htons(far); // session
-       *(uint16_t *) (c->buf + 8) = htons(tunnel[t].ns); // sequence
+       c->buf16[1] = htons(c->length); // length
+       c->buf16[2] = htons(tunnel[t].far); // tunnel
+       c->buf16[3] = htons(far); // session
+       c->buf16[4] = htons(tunnel[t].ns); // sequence
        tunnel[t].ns++;              // advance sequence
        // link in message in to queue
        if (tunnel[t].controlc)
        tunnel[t].ns++;              // advance sequence
        // link in message in to queue
        if (tunnel[t].controlc)
@@ -1957,11 +1950,11 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                int routed = 0;
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
                {
                int routed = 0;
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
                {
-                       if ((session[s].ip & session[s].route[r].mask) ==
-                           (session[s].route[r].ip & session[s].route[r].mask))
+                       if ((session[s].ip >> (32-session[s].route[r].prefixlen)) ==
+                           (session[s].route[r].ip >> (32-session[s].route[r].prefixlen)))
                                routed++;
 
                                routed++;
 
-                       if (del_routes) routeset(s, session[s].route[r].ip, session[s].route[r].mask, 0, 0);
+                       if (del_routes) routeset(s, session[s].route[r].ip, session[s].route[r].prefixlen, 0, 0);
                        session[s].route[r].ip = 0;
                }
 
                        session[s].route[r].ip = 0;
                }
 
@@ -1981,11 +1974,11 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                {
                        // This session was part of a bundle
                        bundle[b].num_of_links--;
                {
                        // This session was part of a bundle
                        bundle[b].num_of_links--;
-                       LOG(3, s, 0, "MPPP: Dropping member link: %d from bundle %d\n",s,b);
+                       LOG(3, s, session[s].tunnel, "MPPP: Dropping member link: %d from bundle %d\n",s,b);
                        if(bundle[b].num_of_links == 0) 
                        {
                                bundleclear(b);
                        if(bundle[b].num_of_links == 0) 
                        {
                                bundleclear(b);
-                               LOG(3, s, 0, "MPPP: Kill bundle: %d (No remaing member links)\n",b);
+                               LOG(3, s, session[s].tunnel, "MPPP: Kill bundle: %d (No remaing member links)\n",b);
                        }
                        else 
                        {
                        }
                        else 
                        {
@@ -2002,7 +1995,7 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                                                        break;
                                                }
                                        bundle[b].members[mem_num] = bundle[b].members[bundle[b].num_of_links];
                                                        break;
                                                }
                                        bundle[b].members[mem_num] = bundle[b].members[bundle[b].num_of_links];
-                                       LOG(3, s, 0, "MPPP: Adjusted member links array\n");
+                                       LOG(3, s, session[s].tunnel, "MPPP: Adjusted member links array\n");
                                }
                        }
                        cluster_send_bundle(b);
                                }
                        }
                        cluster_send_bundle(b);
@@ -2017,10 +2010,10 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                controlt *c = controlnew(14); // sending CDN
                if (cdn_error)
                {
                controlt *c = controlnew(14); // sending CDN
                if (cdn_error)
                {
-                       uint8_t buf[4];
-                       *(uint16_t *) buf     = htons(cdn_result);
-                       *(uint16_t *) (buf+2) = htons(cdn_error);
-                       controlb(c, 1, buf, 4, 1);
+                       uint16_t buf[2];
+                       buf[0] = htons(cdn_result);
+                       buf[1] = htons(cdn_error);
+                       controlb(c, 1, (uint8_t *)buf, 4, 1);
                }
                else
                        control16(c, 1, cdn_result, 1);
                }
                else
                        control16(c, 1, cdn_result, 1);
@@ -2209,21 +2202,21 @@ static void tunnelshutdown(tunnelidt t, char *reason, int result, int error, cha
                controlt *c = controlnew(4);    // sending StopCCN
                if (error)
                {
                controlt *c = controlnew(4);    // sending StopCCN
                if (error)
                {
-                       uint8_t buf[64];
+                       uint16_t buf[32];
                        int l = 4;
                        int l = 4;
-                       *(uint16_t *) buf     = htons(result);
-                       *(uint16_t *) (buf+2) = htons(error);
+                       buf[0] = htons(result);
+                       buf[1] = htons(error);
                        if (msg)
                        {
                                int m = strlen(msg);
                                if (m + 4 > sizeof(buf))
                                    m = sizeof(buf) - 4;
 
                        if (msg)
                        {
                                int m = strlen(msg);
                                if (m + 4 > sizeof(buf))
                                    m = sizeof(buf) - 4;
 
-                               memcpy(buf+4, msg, m);
+                               memcpy(buf+2, msg, m);
                                l += m;
                        }
 
                                l += m;
                        }
 
-                       controlb(c, 1, buf, l, 1);
+                       controlb(c, 1, (uint8_t *)buf, l, 1);
                }
                else
                        control16(c, 1, result, 1);
                }
                else
                        control16(c, 1, result, 1);
@@ -2965,7 +2958,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 
                                        // Set multilink options before sending initial LCP packet
                                        sess_local[s].mp_mrru = 1614;
 
                                        // Set multilink options before sending initial LCP packet
                                        sess_local[s].mp_mrru = 1614;
-                                       sess_local[s].mp_epdis = config->bind_address ? config->bind_address : my_address;
+                                       sess_local[s].mp_epdis = ntohl(config->bind_address ? config->bind_address : my_address);
 
                                        sendlcp(s, t);
                                        change_state(s, lcp, RequestSent);
 
                                        sendlcp(s, t);
                                        change_state(s, lcp, RequestSent);
@@ -3593,35 +3586,36 @@ static int still_busy(void)
        static clockt last_talked = 0;
        static clockt start_busy_wait = 0;
 
        static clockt last_talked = 0;
        static clockt start_busy_wait = 0;
 
-       if (!config->cluster_iam_master)
-       {
 #ifdef BGP
 #ifdef BGP
-               static time_t stopped_bgp = 0;
-               if (bgp_configured)
+       static time_t stopped_bgp = 0;
+       if (bgp_configured)
+       {
+               if (!stopped_bgp)
                {
                {
-                       if (!stopped_bgp)
-                       {
-                               LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY);
+                       LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY);
 
 
-                               for (i = 0; i < BGP_NUM_PEERS; i++)
-                                       if (bgp_peers[i].state == Established)
-                                               bgp_stop(&bgp_peers[i]);
+                       for (i = 0; i < BGP_NUM_PEERS; i++)
+                               if (bgp_peers[i].state == Established)
+                                       bgp_stop(&bgp_peers[i]);
 
 
-                               stopped_bgp = time_now;
+                       stopped_bgp = time_now;
 
 
+                       if (!config->cluster_iam_master)
+                       {
                                // we don't want to become master
                                cluster_send_ping(0);
 
                                return 1;
                        }
                                // we don't want to become master
                                cluster_send_ping(0);
 
                                return 1;
                        }
-
-                       if (time_now < (stopped_bgp + QUIT_DELAY))
-                               return 1;
                }
                }
+
+               if (!config->cluster_iam_master && time_now < (stopped_bgp + QUIT_DELAY))
+                       return 1;
+       }
 #endif /* BGP */
 
 #endif /* BGP */
 
+       if (!config->cluster_iam_master)
                return 0;
                return 0;
-       }
 
        if (main_quit == QUIT_SHUTDOWN)
        {
 
        if (main_quit == QUIT_SHUTDOWN)
        {
@@ -3766,7 +3760,8 @@ static void mainloop(void)
                if (config->neighbour[i].name[0])
                        bgp_start(&bgp_peers[i], config->neighbour[i].name,
                                config->neighbour[i].as, config->neighbour[i].keepalive,
                if (config->neighbour[i].name[0])
                        bgp_start(&bgp_peers[i], config->neighbour[i].name,
                                config->neighbour[i].as, config->neighbour[i].keepalive,
-                               config->neighbour[i].hold, 0); /* 0 = routing disabled */
+                               config->neighbour[i].hold, config->neighbour[i].update_source,
+                               0); /* 0 = routing disabled */
        }
 #endif /* BGP */
 
        }
 #endif /* BGP */
 
@@ -3986,6 +3981,11 @@ static void mainloop(void)
                                more++;
                        }
                }
                                more++;
                        }
                }
+#ifdef BGP
+               else
+                       /* no event received, but timers could still have expired */
+                       bgp_process_peers_timers();
+#endif /* BGP */
 
                if (time_changed)
                {
 
                if (time_changed)
                {
@@ -4473,18 +4473,18 @@ static void fix_address_pool(int sid)
 //
 // Add a block of addresses to the IP pool to hand out.
 //
 //
 // Add a block of addresses to the IP pool to hand out.
 //
-static void add_to_ip_pool(in_addr_t addr, in_addr_t mask)
+static void add_to_ip_pool(in_addr_t addr, int prefixlen)
 {
        int i;
 {
        int i;
-       if (mask == 0)
-               mask = 0xffffffff;      // Host route only.
+       if (prefixlen == 0)
+               prefixlen = 32;         // Host route only.
 
 
-       addr &= mask;
+       addr &= 0xffffffff << (32 - prefixlen);
 
        if (ip_pool_size >= MAXIPPOOL)  // Pool is full!
                return ;
 
 
        if (ip_pool_size >= MAXIPPOOL)  // Pool is full!
                return ;
 
-       for (i = addr ;(i & mask) == addr; ++i)
+       for (i = addr ; i < addr+(1<<(32-prefixlen)); ++i)
        {
                if ((i & 0xff) == 0 || (i&0xff) == 255)
                        continue;       // Skip 0 and broadcast addresses.
        {
                if ((i & 0xff) == 0 || (i&0xff) == 255)
                        continue;       // Skip 0 and broadcast addresses.
@@ -4542,7 +4542,7 @@ static void initippool()
                {
                        // It's a range
                        int numbits = 0;
                {
                        // It's a range
                        int numbits = 0;
-                       in_addr_t start = 0, mask = 0;
+                       in_addr_t start = 0;
 
                        LOG(2, 0, 0, "Adding IP address range %s\n", buf);
                        *p++ = 0;
 
                        LOG(2, 0, 0, "Adding IP address range %s\n", buf);
                        *p++ = 0;
@@ -4552,15 +4552,14 @@ static void initippool()
                                continue;
                        }
                        start = ntohl(inet_addr(pool));
                                continue;
                        }
                        start = ntohl(inet_addr(pool));
-                       mask = (in_addr_t) (pow(2, numbits) - 1) << (32 - numbits);
 
                        // Add a static route for this pool
 
                        // Add a static route for this pool
-                       LOG(5, 0, 0, "Adding route for address pool %s/%u\n",
-                               fmtaddr(htonl(start), 0), 32 + mask);
+                       LOG(5, 0, 0, "Adding route for address pool %s/%d\n",
+                               fmtaddr(htonl(start), 0), numbits);
 
 
-                       routeset(0, start, mask, 0, 1);
+                       routeset(0, start, numbits, 0, 1);
 
 
-                       add_to_ip_pool(start, mask);
+                       add_to_ip_pool(start, numbits);
                }
                else
                {
                }
                else
                {
@@ -4711,8 +4710,12 @@ int main(int argc, char *argv[])
        initplugins();
        initdata(optdebug, optconfig);
 
        initplugins();
        initdata(optdebug, optconfig);
 
-       init_cli(hostname);
+       init_cli();
        read_config_file();
        read_config_file();
+       /* set hostname /after/ having read the config file */
+       if (*config->hostname)
+               strcpy(hostname, config->hostname);
+       cli_init_complete(hostname);
        update_config();
        init_tbf(config->num_tbfs);
 
        update_config();
        init_tbf(config->num_tbfs);
 
@@ -5209,11 +5212,11 @@ int sessionsetup(sessionidt s, tunnelidt t)
                // Add the route for this session.
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
                {
                // Add the route for this session.
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
                {
-                       if ((session[s].ip & session[s].route[r].mask) ==
-                           (session[s].route[r].ip & session[s].route[r].mask))
+                       if ((session[s].ip >> (32-session[s].route[r].prefixlen)) ==
+                           (session[s].route[r].ip >> (32-session[s].route[r].prefixlen)))
                                routed++;
 
                                routed++;
 
-                       routeset(s, session[s].route[r].ip, session[s].route[r].mask, 0, 1);
+                       routeset(s, session[s].route[r].ip, session[s].route[r].prefixlen, 0, 1);
                }
 
                // Static IPs need to be routed if not already
                }
 
                // Static IPs need to be routed if not already
@@ -5284,7 +5287,7 @@ int load_session(sessionidt s, sessiont *new)
 
        for (i = 0; !newip && i < MAXROUTE && (session[s].route[i].ip || new->route[i].ip); i++)
                if (new->route[i].ip != session[s].route[i].ip ||
 
        for (i = 0; !newip && i < MAXROUTE && (session[s].route[i].ip || new->route[i].ip); i++)
                if (new->route[i].ip != session[s].route[i].ip ||
-                   new->route[i].mask != session[s].route[i].mask)
+                   new->route[i].prefixlen != session[s].route[i].prefixlen)
                        newip++;
 
        // needs update
                        newip++;
 
        // needs update
@@ -5295,11 +5298,11 @@ int load_session(sessionidt s, sessiont *new)
                // remove old routes...
                for (i = 0; i < MAXROUTE && session[s].route[i].ip; i++)
                {
                // remove old routes...
                for (i = 0; i < MAXROUTE && session[s].route[i].ip; i++)
                {
-                       if ((session[s].ip & session[s].route[i].mask) ==
-                           (session[s].route[i].ip & session[s].route[i].mask))
+                       if ((session[s].ip >> (32-session[s].route[i].prefixlen)) ==
+                           (session[s].route[i].ip >> (32-session[s].route[i].prefixlen)))
                                routed++;
 
                                routed++;
 
-                       routeset(s, session[s].route[i].ip, session[s].route[i].mask, 0, 0);
+                       routeset(s, session[s].route[i].ip, session[s].route[i].prefixlen, 0, 0);
                }
 
                // ...ip
                }
 
                // ...ip
@@ -5318,11 +5321,11 @@ int load_session(sessionidt s, sessiont *new)
                // add new routes...
                for (i = 0; i < MAXROUTE && new->route[i].ip; i++)
                {
                // add new routes...
                for (i = 0; i < MAXROUTE && new->route[i].ip; i++)
                {
-                       if ((new->ip & new->route[i].mask) ==
-                           (new->route[i].ip & new->route[i].mask))
+                       if ((new->ip >> (32-new->route[i].prefixlen)) ==
+                           (new->route[i].ip >> (32-new->route[i].prefixlen)))
                                routed++;
 
                                routed++;
 
-                       routeset(s, new->route[i].ip, new->route[i].mask, 0, 1);
+                       routeset(s, new->route[i].ip, new->route[i].prefixlen, 0, 1);
                }
 
                // ...ip
                }
 
                // ...ip
for cloning use: "git clone git://git.sameswireless.fr/l2tpns.git" ; For add to your sources.list: "deb http://package.sameswifi.fr/ jessie main"