Merge from master
[l2tpns.git] / l2tpns.c
index 8fca167..867730b 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -10,6 +10,7 @@
 #include <fcntl.h>
 #include <linux/if_tun.h>
 #define SYSLOG_NAMES
+#include <stdio.h>
 #include <syslog.h>
 #include <malloc.h>
 #include <net/route.h>
@@ -19,7 +20,6 @@
 #include <netinet/ip6.h>
 #include <stdarg.h>
 #include <stdlib.h>
-#include <stdio.h>
 #include <string.h>
 #include <ctype.h>
 #include <sys/ioctl.h>
 #include "bgp.h"
 #endif
 
-#ifdef LAC
 #include "l2tplac.h"
-#endif
 #include "pppoe.h"
 
-#ifdef LAC
 char * Vendor_name = "Linux L2TPNS";
 uint32_t call_serial_number = 0;
-#endif
 
 // Globals
 configt *config = NULL;                // all configuration
 int nlfd = -1;                 // netlink socket
 int tunfd = -1;                        // tun interface file handle. (network device)
-int udpfd = -1;                        // UDP file handle
-#ifdef LAC
+int udpfd[MAX_UDPFD + 1] = INIT_TABUDPFD;              // array UDP file handle + 1 for lac udp
 int udplacfd = -1;             // UDP LAC file handle
-#endif
 int controlfd = -1;            // Control signal handle
 int clifd = -1;                        // Socket listening for CLI connections.
 int daefd = -1;                        // Socket listening for DAE connections.
@@ -81,7 +75,7 @@ int cluster_sockfd = -1;      // Intra-cluster communications socket.
 int epollfd = -1;              // event polling
 time_t basetime = 0;           // base clock
 char hostname[MAXHOSTNAME] = "";       // us.
-static int tunidx;             // ifr_ifindex of tun device
+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 syslog_log = 0;     // are we logging to syslog
@@ -98,10 +92,7 @@ uint16_t MSS = 0;            // TCP MSS
 struct cli_session_actions *cli_session_actions = NULL;        // Pending session changes requested by CLI
 struct cli_tunnel_actions *cli_tunnel_actions = NULL;  // Pending tunnel changes required by CLI
 
-union iphash {
-       sessionidt sess;
-       union iphash *idx;
-} ip_hash[256];                        // Mapping from IP address to session structures.
+union iphash ip_hash[256];     // Mapping from IP address to session structures.
 
 struct ipv6radix {
        sessionidt sess;
@@ -158,6 +149,7 @@ config_descriptt config_values[] = {
        CONFIG("throttle_speed", rl_rate, UNSIGNED_LONG),
        CONFIG("throttle_buckets", num_tbfs, INT),
        CONFIG("accounting_dir", accounting_dir, STRING),
+       CONFIG("account_all_origin", account_all_origin, BOOL),
        CONFIG("dump_speed", dump_speed, BOOL),
        CONFIG("multi_read_count", multi_read_count, INT),
        CONFIG("scheduler_fifo", scheduler_fifo, BOOL),
@@ -181,17 +173,19 @@ config_descriptt config_values[] = {
        CONFIG("idle_echo_timeout", idle_echo_timeout, INT),
        CONFIG("iftun_address", iftun_address, IPv4),
        CONFIG("tundevicename", tundevicename, STRING),
-#ifdef LAC
        CONFIG("disable_lac_func", disable_lac_func, BOOL),
        CONFIG("auth_tunnel_change_addr_src", auth_tunnel_change_addr_src, BOOL),
        CONFIG("bind_address_remotelns", bind_address_remotelns, IPv4),
        CONFIG("bind_portremotelns", bind_portremotelns, SHORT),
-#endif
        CONFIG("pppoe_if_to_bind", pppoe_if_to_bind, STRING),
        CONFIG("pppoe_service_name", pppoe_service_name, STRING),
        CONFIG("pppoe_ac_name", pppoe_ac_name, STRING),
        CONFIG("disable_sending_hello", disable_sending_hello, BOOL),
        CONFIG("disable_no_spoof", disable_no_spoof, BOOL),
+       CONFIG("bind_multi_address", bind_multi_address, STRING),
+       CONFIG("grp_txrate_average_time", grp_txrate_average_time, INT),
+       CONFIG("pppoe_only_equal_svc_name", pppoe_only_equal_svc_name, BOOL),
+       CONFIG("multi_hostname", multi_hostname, STRING),
        { NULL, 0, 0, 0 }
 };
 
@@ -220,6 +214,7 @@ tunnelt *tunnel = NULL;                     // Array of tunnel structures.
 bundlet *bundle = NULL;                        // Array of bundle structures.
 fragmentationt *frag = NULL;           // Array of fragmentation structures.
 sessiont *session = NULL;              // Array of session structures.
+groupsesst *grpsession = NULL;         // Array of groupsesst structures.
 sessionlocalt *sess_local = NULL;      // Array of local per-session counters.
 radiust *radius = NULL;                        // Array of radius structures.
 ippoolt *ip_address_pool = NULL;       // Array of dynamic IP addresses.
@@ -230,9 +225,6 @@ struct Tstats *_statistics = NULL;
 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 free_ip_address(sessionidt s);
@@ -261,8 +253,9 @@ static clockt now(double *f)
        if (f) *f = t.tv_sec + t.tv_usec / 1000000.0;
        if (t.tv_sec != time_now)
        {
-           time_now = t.tv_sec;
-           time_changed++;
+               time_now = t.tv_sec;
+               time_changed++;
+               grp_time_changed();
        }
 
        // Time in milliseconds
@@ -621,7 +614,7 @@ static void initnetlink(void)
        }
 }
 
-static ssize_t netlink_send(struct nlmsghdr *nh)
+ssize_t netlink_send(struct nlmsghdr *nh)
 {
        struct sockaddr_nl nladdr;
        struct iovec iov;
@@ -657,7 +650,7 @@ static ssize_t netlink_recv(void *buf, ssize_t len)
 }
 
 /* adapted from iproute2 */
-static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen)
+void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen)
 {
        int len = RTA_LENGTH(alen);
        struct rtattr *rta;
@@ -700,7 +693,7 @@ static void inittun(void)
        }
 
    if (*config->tundevicename)
-         strncpy(ifr.ifr_name, config->tundevicename, IFNAMSIZ);
+               strncpy(ifr.ifr_name, config->tundevicename, IFNAMSIZ);
 
        if (ioctl(tunfd, TUNSETIFF, (void *) &ifr) < 0)
        {
@@ -762,14 +755,30 @@ static void inittun(void)
                req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
                req.ifmsg.ifaddr.ifa_index = tunidx;
 
-               if (config->iftun_address)
-                       ip = config->iftun_address;
+               if (config->nbmultiaddress > 1)
+               {
+                       int i;
+                       for (i = 0; i < config->nbmultiaddress ; i++)
+                       {
+                               ip = config->iftun_n_address[i];
+                               netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip));
+                               if (netlink_send(&req.nh) < 0)
+                                       goto senderror;
+                       }
+               }
                else
-                       ip = 0x01010101; // 1.1.1.1
-               netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip));
+               {
+                       if (config->iftun_address)
+                               ip = config->iftun_address;
+                       else
+                               ip = 0x01010101; // 1.1.1.1
+                       netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip));
+
+                       if (netlink_send(&req.nh) < 0)
+                               goto senderror;
+               }
+
 
-               if (netlink_send(&req.nh) < 0)
-                       goto senderror;
 
                // Only setup IPv6 on the tun device if we have a configured prefix
                if (config->ipv6_prefix.s6_addr[0]) {
@@ -839,28 +848,35 @@ senderror:
        exit(1);
 }
 
-// set up UDP ports
-static void initudp(void)
+// set up LAC UDP ports
+static void initlacudp(void)
 {
        int on = 1;
        struct sockaddr_in addr;
 
-       // Tunnel
+       // Tunnel to Remote LNS
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
-       addr.sin_port = htons(L2TPPORT);
-       addr.sin_addr.s_addr = config->bind_address;
-       udpfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
-       setsockopt(udpfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+       addr.sin_port = htons(config->bind_portremotelns);
+       addr.sin_addr.s_addr = config->bind_address_remotelns;
+       udplacfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+       setsockopt(udplacfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
        {
-               int flags = fcntl(udpfd, F_GETFL, 0);
-               fcntl(udpfd, F_SETFL, flags | O_NONBLOCK);
+               int flags = fcntl(udplacfd, F_GETFL, 0);
+               fcntl(udplacfd, F_SETFL, flags | O_NONBLOCK);
        }
-       if (bind(udpfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
+       if (bind(udplacfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
        {
-               LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error in UDP REMOTE LNS bind: %s\n", strerror(errno));
                exit(1);
        }
+}
+
+// set up control ports
+static void initcontrol(void)
+{
+       int on = 1;
+       struct sockaddr_in addr;
 
        // Control
        memset(&addr, 0, sizeof(addr));
@@ -874,6 +890,13 @@ static void initudp(void)
                LOG(0, 0, 0, "Error in control bind: %s\n", strerror(errno));
                exit(1);
        }
+}
+
+// set up Dynamic Authorization Extensions to RADIUS port
+static void initdae(void)
+{
+       int on = 1;
+       struct sockaddr_in addr;
 
        // Dynamic Authorization Extensions to RADIUS
        memset(&addr, 0, sizeof(addr));
@@ -887,28 +910,30 @@ static void initudp(void)
                LOG(0, 0, 0, "Error in DAE bind: %s\n", strerror(errno));
                exit(1);
        }
+}
 
-#ifdef LAC
-       // Tunnel to Remote LNS
+// set up UDP ports
+static void initudp(int * pudpfd, in_addr_t ip_bind)
+{
+       int on = 1;
+       struct sockaddr_in addr;
+
+       // Tunnel
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
-       addr.sin_port = htons(config->bind_portremotelns);
-       addr.sin_addr.s_addr = config->bind_address_remotelns;
-       udplacfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
-       setsockopt(udplacfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+       addr.sin_port = htons(L2TPPORT);
+       addr.sin_addr.s_addr = ip_bind;
+       (*pudpfd) = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+       setsockopt((*pudpfd), SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
        {
-               int flags = fcntl(udplacfd, F_GETFL, 0);
-               fcntl(udplacfd, F_SETFL, flags | O_NONBLOCK);
+               int flags = fcntl((*pudpfd), F_GETFL, 0);
+               fcntl((*pudpfd), F_SETFL, flags | O_NONBLOCK);
        }
-       if (bind(udplacfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
+       if (bind((*pudpfd), (struct sockaddr *) &addr, sizeof(addr)) < 0)
        {
-               LOG(0, 0, 0, "Error in UDP REMOTE LNS bind: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));
                exit(1);
        }
-#endif
-
-       // Intercept
-       snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 }
 
 //
@@ -985,8 +1010,10 @@ sessionidt sessionbyipv6(struct in6_addr ip)
                 ip.s6_addr[1] == 0x80 &&
                 ip.s6_addr16[1] == 0 &&
                 ip.s6_addr16[2] == 0 &&
-                ip.s6_addr16[3] == 0)) {
-               s = lookup_ipmap(*(in_addr_t *) &ip.s6_addr[8]);
+                ip.s6_addr16[3] == 0))
+       {
+               in_addr_t *pipv4 = (in_addr_t *) &ip.s6_addr[8];
+               s = lookup_ipmap(*pipv4);
        } else {
                s = lookup_ipv6map(ip);
        }
@@ -1003,7 +1030,7 @@ sessionidt sessionbyipv6(struct in6_addr ip)
 //
 // (It's actually cached in network order)
 //
-static void cache_ipmap(in_addr_t ip, sessionidt s)
+void cache_ipmap(in_addr_t ip, sessionidt s)
 {
        in_addr_t nip = htonl(ip);      // MUST be in network order. I.e. MSB must in be ((char *) (&ip))[0]
        uint8_t *a = (uint8_t *) &nip;
@@ -1072,7 +1099,7 @@ static void cache_ipv6map(struct in6_addr ip, int prefixlen, sessionidt s)
 //
 // CLI list to dump current ipcache.
 //
-int cmd_show_ipcache(struct cli_def *cli, char *command, char **argv, int argc)
+int cmd_show_ipcache(struct cli_def *cli, const char *command, char **argv, int argc)
 {
        union iphash *d = ip_hash, *e, *f, *g;
        int i, j, k, l;
@@ -1233,14 +1260,11 @@ void tunnelsend(uint8_t * buf, uint16_t l, tunnelidt t)
                        LOG(3, 0, t, "Control message resend try %d\n", tunnel[t].try);
                }
        }
-#ifdef LAC
-       if (sendto((tunnel[t].isremotelns?udplacfd:udpfd), buf, l, 0, (void *) &addr, sizeof(addr)) < 0)
-#else
-       if (sendto(udpfd, buf, l, 0, (void *) &addr, sizeof(addr)) < 0)
-#endif
+
+       if (sendto(udpfd[tunnel[t].indexudp], buf, l, 0, (void *) &addr, sizeof(addr)) < 0)
        {
                LOG(0, ntohs((*(uint16_t *) (buf + 6))), t, "Error sending data out tunnel: %s (udpfd=%d, buf=%p, len=%d, dest=%s)\n",
-                               strerror(errno), udpfd, buf, l, inet_ntoa(addr.sin_addr));
+                               strerror(errno), udpfd[tunnel[t].indexudp], buf, l, inet_ntoa(addr.sin_addr));
                STAT(tunnel_tx_errors);
                return;
        }
@@ -1388,9 +1412,10 @@ static void update_session_out_stat(sessionidt s, sessiont *sp, int len)
 void processipout(uint8_t *buf, int len)
 {
        sessionidt s;
+       groupidt g;
        sessiont *sp;
        tunnelidt t;
-       in_addr_t ip;
+       in_addr_t ip, ip_src;
 
        uint8_t *data = buf;    // Keep a copy of the originals.
        int size = len;
@@ -1423,8 +1448,33 @@ void processipout(uint8_t *buf, int len)
                return;
        }
 
+       ip_src = *(uint32_t *)(buf + 12);
        ip = *(uint32_t *)(buf + 16);
-       if (!(s = sessionbyip(ip)))
+       if ((g = grp_groupbyip(ip)))
+       {
+               s = grp_getnextsession(g, ip, ip_src);
+               if (!s)
+               {
+                       // Is this a packet for a session that doesn't exist?
+                       static int rate = 0;    // Number of ICMP packets we've sent this second.
+                       static int last = 0;    // Last time we reset the ICMP packet counter 'rate'.
+
+                       if (last != time_now)
+                       {
+                               last = time_now;
+                               rate = 0;
+                       }
+
+                       if (rate++ < config->icmp_rate) // Only send a max of icmp_rate per second.
+                       {
+                               LOG(4, 0, 0, "IP: Sending ICMP host unreachable to %s\n", fmtaddr(*(in_addr_t *)(buf + 12), 0));
+                               host_unreachable(*(in_addr_t *)(buf + 12), *(uint16_t *)(buf + 4),
+                                       config->bind_address ? config->bind_address : my_address, buf, len);
+                       }
+                       return;
+               }
+       }
+       else if (!(s = sessionbyip(ip)))
        {
                // Is this a packet for a session that doesn't exist?
                static int rate = 0;    // Number of ICMP packets we've sent this second.
@@ -1774,6 +1824,8 @@ static void send_ipout(sessionidt s, uint8_t *buf, int len)
 {
        sessiont *sp;
        tunnelidt t;
+       uint8_t *p;
+       uint8_t *data = buf;    // Keep a copy of the originals.
 
        uint8_t b[MAXETHER + 20];
 
@@ -1796,11 +1848,14 @@ static void send_ipout(sessionidt s, uint8_t *buf, int len)
        LOG(5, s, t, "Ethernet -> Tunnel (%d bytes)\n", len);
 
        // Add on L2TP header
-       {
-               uint8_t *p = makeppp(b, sizeof(b), buf, len, s, t, PPPIP, 0, 0, 0);
-               if (!p) return;
-               tunnelsend(b, len + (p-b), t); // send it...
-       }
+       if (*(uint16_t *) (data + 2) == htons(PKTIPV6))
+               p = makeppp(b, sizeof(b), buf, len, s, t, PPPIPV6, 0, 0, 0); // IPV6
+       else
+               p = makeppp(b, sizeof(b), buf, len, s, t, PPPIP, 0, 0, 0); // IPV4
+
+       if (!p) return;
+
+       tunnelsend(b, len + (p-b), t); // send it...
 
        // Snooping this session.
        if (sp->snoop_ip && sp->snoop_port)
@@ -1819,10 +1874,11 @@ 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);
-       *(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);
+       uint16_t *pint16 = (uint16_t *) (c->buf + c->length + 0);
+       pint16[0] = htons(l);
+       pint16[1] = htons(0);
+       pint16[2] = htons(avp);
+       pint16[3] = htons(val);
        c->length += 8;
 }
 
@@ -1830,10 +1886,12 @@ 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);
-       *(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);
+       uint16_t *pint16 = (uint16_t *) (c->buf + c->length + 0);
+       uint32_t *pint32 = (uint32_t *) (c->buf + c->length + 6);
+       pint16[0] = htons(l);
+       pint16[1] = htons(0);
+       pint16[2] = htons(avp);
+       pint32[0] = htonl(val);
        c->length += 10;
 }
 
@@ -1841,9 +1899,10 @@ 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);
-       *(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 *pint16 = (uint16_t *) (c->buf + c->length + 0);
+       pint16[0] = htons(l);
+       pint16[1] = htons(0);
+       pint16[2] = htons(avp);
        memcpy(c->buf + c->length + 6, val, strlen(val));
        c->length += 6 + strlen(val);
 }
@@ -1852,9 +1911,10 @@ 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);
-       *(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 *pint16 = (uint16_t *) (c->buf + c->length + 0);
+       pint16[0] = htons(l);
+       pint16[1] = htons(0);
+       pint16[2] = htons(avp);
        memcpy(c->buf + c->length + 6, val, len);
        c->length += 6 + len;
 }
@@ -1872,7 +1932,8 @@ static controlt *controlnew(uint16_t mtype)
        }
        assert(c);
        c->next = 0;
-       *(uint16_t *) (c->buf + 0) = htons(0xC802); // flags/ver
+       c->buf[0] = 0xC8; // flags
+       c->buf[1] = 0x02; // ver
        c->length = 12;
        control16(c, 0, mtype, 1);
        return c;
@@ -1882,26 +1943,27 @@ static controlt *controlnew(uint16_t mtype)
 // (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;
 
-       *(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)
 {
-       *(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
+       uint16_t *pint16 = (uint16_t *) (c->buf + 2);
+       pint16[0] = htons(c->length); // length
+       pint16[1] = htons(tunnel[t].far); // tunnel
+       pint16[2] = htons(far); // session
+       pint16[3] = htons(tunnel[t].ns); // sequence
        tunnel[t].ns++;              // advance sequence
        // link in message in to queue
        if (tunnel[t].controlc)
@@ -2054,7 +2116,7 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                session[s].die = TIME + 150; // Clean up in 15 seconds
 
        if (session[s].ip)
-       {                          // IP allocated, clear and unroute
+       {       // IP allocated, clear and unroute
                int r;
                int routed = 0;
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
@@ -2152,14 +2214,15 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e
                        pppoe_shutdown_session(s);
                }
                else
-               {       // Send CDN
+               {
+                       // Send CDN
                        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);
@@ -2206,7 +2269,7 @@ void sendipcp(sessionidt s, tunnelidt t)
        q[4] = 3;                               // ip address option
        q[5] = 6;                               // option length
        *(in_addr_t *) (q + 6) = config->peer_address ? config->peer_address :
-                                config->iftun_address ? config->iftun_address :
+                                config->iftun_n_address[tunnel[t].indexudp] ? config->iftun_n_address[tunnel[t].indexudp] :
                                 my_address; // send my IP
 
        tunnelsend(buf, 10 + (q - buf), t); // send it
@@ -2253,6 +2316,8 @@ static void sessionclear(sessionidt s)
 // kill a session now
 void sessionkill(sessionidt s, char *reason)
 {
+       groupidt g;
+
        CSTAT(sessionkill);
 
        if (!session[s].opened) // not alive
@@ -2270,7 +2335,6 @@ void sessionkill(sessionidt s, char *reason)
        if (sess_local[s].radius)
                radiusclear(sess_local[s].radius, s); // cant send clean accounting data, session is killed
 
-#ifdef LAC
        if (session[s].forwardtosession)
        {
                sessionidt sess = session[s].forwardtosession;
@@ -2280,9 +2344,14 @@ void sessionkill(sessionidt s, char *reason)
                        sessionshutdown(sess, reason, CDN_ADMIN_DISC, TERM_ADMIN_RESET);
                }
        }
-#endif
 
        LOG(2, s, session[s].tunnel, "Kill session %d (%s): %s\n", s, session[s].user, reason);
+
+       if ((g = grp_groupbysession(s)))
+       {
+               grp_removesession(g, s);
+       }
+
        sessionclear(s);
        cluster_send_session(s);
 }
@@ -2361,21 +2430,21 @@ static void tunnelshutdown(tunnelidt t, char *reason, int result, int error, cha
                controlt *c = controlnew(4);    // sending StopCCN
                if (error)
                {
-                       uint8_t buf[64];
+                       uint16_t buf[32];
                        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;
 
-                               memcpy(buf+4, msg, m);
+                               memcpy(buf+2, msg, m);
                                l += m;
                        }
 
-                       controlb(c, 1, buf, l, 1);
+                       controlb(c, 1, (uint8_t *)buf, l, 1);
                }
                else
                        control16(c, 1, result, 1);
@@ -2386,9 +2455,10 @@ static void tunnelshutdown(tunnelidt t, char *reason, int result, int error, cha
 }
 
 // read and process packet on tunnel (UDP)
-void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
+void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexudpfd)
 {
-       uint8_t *chapresponse = NULL;
+       uint8_t *sendchalresponse = NULL;
+       uint8_t *recvchalresponse = NULL;
        uint16_t l = len, t = 0, s = 0, ns = 0, nr = 0;
        uint8_t *p = buf + 2;
 
@@ -2477,7 +2547,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 
                if (!config->cluster_iam_master)
                {
-                       master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
+                       master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
                        return;
                }
 
@@ -2527,6 +2597,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                        tunnel[t].ip = ntohl(*(in_addr_t *) & addr->sin_addr);
                        tunnel[t].port = ntohs(addr->sin_port);
                        tunnel[t].window = 4; // default window
+                       tunnel[t].indexudp = indexudpfd;
                        STAT(tunnel_created);
                        LOG(1, 0, t, "   New tunnel from %s:%u ID %u\n",
                                fmtaddr(htonl(tunnel[t].ip), 0), tunnel[t].port, t);
@@ -2791,22 +2862,23 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                                tunnel[t].window = 1; // window of 0 is silly
                                        LOG(4, s, t, "   rx window = %u\n", tunnel[t].window);
                                        break;
-                               case 11:        // Challenge
+                               case 11:        // Request Challenge
                                        {
                                                LOG(4, s, t, "   LAC requested CHAP authentication for tunnel\n");
-                                               build_chap_response(b, 2, n, &chapresponse);
+                                               if (message == 1)
+                                                       build_chap_response(b, 2, n, &sendchalresponse);
+                                               else if (message == 2)
+                                                       build_chap_response(b, 3, n, &sendchalresponse);
                                        }
                                        break;
-                               case 13:    // Response
-#ifdef LAC
+                               case 13:    // receive challenge Response
                                        if (tunnel[t].isremotelns)
                                        {
-                                               chapresponse = calloc(17, 1);
-                                               memcpy(chapresponse, b, (n < 17) ? n : 16);
+                                               recvchalresponse = calloc(17, 1);
+                                               memcpy(recvchalresponse, b, (n < 17) ? n : 16);
                                                LOG(3, s, t, "received challenge response from REMOTE LNS\n");
                                        }
                                        else
-#endif /* LAC */
                                        // Why did they send a response? We never challenge.
                                        LOG(2, s, t, "   received unexpected challenge response\n");
                                        break;
@@ -3039,8 +3111,8 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                                controlt *c = controlnew(2); // sending SCCRP
                                                control16(c, 2, version, 1); // protocol version
                                                control32(c, 3, 3, 1); // framing
-                                               controls(c, 7, hostname, 1); // host name
-                                               if (chapresponse) controlb(c, 13, chapresponse, 16, 1); // Challenge response
+                                               controls(c, 7, config->multi_n_hostname[tunnel[t].indexudp][0]?config->multi_n_hostname[tunnel[t].indexudp]:hostname, 1); // host name
+                                               if (sendchalresponse) controlb(c, 13, sendchalresponse, 16, 1); // Send Challenge response
                                                control16(c, 9, t, 1); // assigned tunnel
                                                controladd(c, 0, t); // send the resply
                                        }
@@ -3052,24 +3124,24 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                case 2:       // SCCRP
                                        tunnel[t].state = TUNNELOPEN;
                                        tunnel[t].lastrec = time_now;
-#ifdef LAC
                                        LOG(3, s, t, "Received SCCRP\n");
                                        if (main_quit != QUIT_SHUTDOWN)
                                        {
-                                               if (tunnel[t].isremotelns && chapresponse)
+                                               if (tunnel[t].isremotelns && recvchalresponse)
                                                {
                                                        hasht hash;
 
                                                        lac_calc_rlns_auth(t, 2, hash); // id = 2 (SCCRP)
                                                        // check authenticator
-                                                       if (memcmp(hash, chapresponse, 16) == 0)
+                                                       if (memcmp(hash, recvchalresponse, 16) == 0)
                                                        {
                                                                LOG(3, s, t, "sending SCCCN to REMOTE LNS\n");
                                                                controlt *c = controlnew(3); // sending SCCCN
-                                                               controls(c, 7, hostname, 1); // host name
+                                                               controls(c, 7, config->multi_n_hostname[tunnel[t].indexudp][0]?config->multi_n_hostname[tunnel[t].indexudp]:hostname, 1); // host name
                                                                controls(c, 8, Vendor_name, 1); // Vendor name
                                                                control16(c, 2, version, 1); // protocol version
                                                                control32(c, 3, 3, 1); // framing Capabilities
+                                                               if (sendchalresponse) controlb(c, 13, sendchalresponse, 16, 1); // Challenge response
                                                                control16(c, 9, t, 1); // assigned tunnel
                                                                controladd(c, 0, t); // send
                                                        }
@@ -3083,7 +3155,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        {
                                                tunnelshutdown(t, "Shutting down", 6, 0, 0);
                                        }
-#endif /* LAC */
                                        break;
                                case 3:       // SCCN
                                        LOG(3, s, t, "Received SCCN\n");
@@ -3161,7 +3232,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        }
                                        return;
                                case 11:      // ICRP
-#ifdef LAC
                                LOG(3, s, t, "Received ICRP\n");
                                if (session[s].forwardtosession)
                                {
@@ -3177,7 +3247,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        controladd(c, asession, t); // send the message
                                        LOG(3, s, t, "Sending ICCN\n");
                                }
-#endif /* LAC */
                                        break;
                                case 12:      // ICCN
                                        LOG(3, s, t, "Received ICCN\n");
@@ -3215,7 +3284,8 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                                LOG(1, s, t, "Unknown message type %u\n", message);
                                        break;
                                }
-                       if (chapresponse) free(chapresponse);
+                       if (sendchalresponse) free(sendchalresponse);
+                       if (recvchalresponse) free(recvchalresponse);
                        cluster_send_tunnel(t);
                }
                else
@@ -3251,12 +3321,11 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                        l -= 2;
                }
 
-#ifdef LAC
                if (session[s].forwardtosession)
                {
                        LOG(5, s, t, "Forwarding data session to session %u\n", session[s].forwardtosession);
                        // Forward to LAC/BAS or Remote LNS session
-                       lac_session_forward(buf, len, s, proto, addr->sin_addr.s_addr, addr->sin_port);
+                       lac_session_forward(buf, len, s, proto, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
                        return;
                }
                else if (config->auth_tunnel_change_addr_src)
@@ -3271,14 +3340,13 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                tunnel[t].ip = ntohl(addr->sin_addr.s_addr);
                        }
                }
-#endif /* LAC */
 
                if (s && !session[s].opened)    // Is something wrong??
                {
                        if (!config->cluster_iam_master)
                        {
                                // Pass it off to the master to deal with..
-                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
+                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
                                return;
                        }
 
@@ -3290,37 +3358,37 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                if (proto == PPPPAP)
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        processpap(s, t, p, l);
                }
                else if (proto == PPPCHAP)
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        processchap(s, t, p, l);
                }
                else if (proto == PPPLCP)
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        processlcp(s, t, p, l);
                }
                else if (proto == PPPIPCP)
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        processipcp(s, t, p, l);
                }
                else if (proto == PPPIPV6CP && config->ipv6_prefix.s6_addr[0])
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        processipv6cp(s, t, p, l);
                }
                else if (proto == PPPCCP)
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        processccp(s, t, p, l);
                }
                else if (proto == PPPIP)
@@ -3334,7 +3402,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                        session[s].last_packet = session[s].last_data = time_now;
                        if (session[s].walled_garden && !config->cluster_iam_master)
                        {
-                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
+                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
                                return;
                        }
 
@@ -3352,7 +3420,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                        if (!config->cluster_iam_master)
                        {
                                // The fragments reconstruction is managed by the Master.
-                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
+                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
                                return;
                        }
 
@@ -3369,7 +3437,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                        session[s].last_packet = session[s].last_data = time_now;
                        if (session[s].walled_garden && !config->cluster_iam_master)
                        {
-                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port);
+                               master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
                                return;
                        }
 
@@ -3378,7 +3446,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                else if (session[s].ppp.lcp == Opened)
                {
                        session[s].last_packet = time_now;
-                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+                       if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; }
                        protoreject(s, t, p, l, proto);
                }
                else
@@ -3681,7 +3749,7 @@ static void regular_cleanups(double period)
 
                // No data in ECHO_TIMEOUT seconds, send LCP ECHO
                if (session[s].ppp.phase >= Establish && (time_now - session[s].last_packet >= config->echo_timeout) &&
-                       (time_now - sess_local[s].last_echo >= ECHO_TIMEOUT))
+                       (time_now - sess_local[s].last_echo >= config->echo_timeout))
                {
                        uint8_t b[MAXETHER];
 
@@ -3947,13 +4015,8 @@ static int still_busy(void)
 # include "fake_epoll.h"
 #endif
 
-#ifdef LAC
-// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink, udplac, pppoedisc, pppoesess
-#define BASE_FDS       10
-#else
-// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink, pppoedisc, pppoesess
-#define BASE_FDS       9
-#endif
+// the base set of fds polled: cli, cluster, tun, udp (MAX_UDPFD), control, dae, netlink, udplac, pppoedisc, pppoesess
+#define BASE_FDS       (9 + MAX_UDPFD)
 
 // additional polled fds
 #ifdef BGP
@@ -3965,7 +4028,7 @@ static int still_busy(void)
 // main loop - gets packets on tun or udp and processes them
 static void mainloop(void)
 {
-       int i;
+       int i, j;
        uint8_t buf[65536];
        uint8_t *p = buf + 32; // for the hearder of the forwarded MPPP packet (see C_MPPP_FORWARD)
                                                // and the forwarded pppoe session
@@ -3980,13 +4043,8 @@ static void mainloop(void)
                exit(1);
        }
 
-#ifdef LAC
        LOG(4, 0, 0, "Beginning of main loop.  clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d , udplacfd=%d, pppoefd=%d, pppoesessfd=%d\n",
-               clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd, udplacfd, pppoediscfd, pppoesessfd);
-#else
-       LOG(4, 0, 0, "Beginning of main loop.  clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d, pppoefd=%d, pppoesessfd=%d\n",
-               clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd, pppoediscfd, pppoesessfd);
-#endif
+               clifd, cluster_sockfd, tunfd, udpfd[0], controlfd, daefd, nlfd, udplacfd, pppoediscfd, pppoesessfd);
 
        /* setup our fds to poll for input */
        {
@@ -4011,10 +4069,6 @@ static void mainloop(void)
                e.data.ptr = &d[i++];
                epoll_ctl(epollfd, EPOLL_CTL_ADD, tunfd, &e);
 
-               d[i].type = FD_TYPE_UDP;
-               e.data.ptr = &d[i++];
-               epoll_ctl(epollfd, EPOLL_CTL_ADD, udpfd, &e);
-
                d[i].type = FD_TYPE_CONTROL;
                e.data.ptr = &d[i++];
                epoll_ctl(epollfd, EPOLL_CTL_ADD, controlfd, &e);
@@ -4027,12 +4081,6 @@ static void mainloop(void)
                e.data.ptr = &d[i++];
                epoll_ctl(epollfd, EPOLL_CTL_ADD, nlfd, &e);
 
-#ifdef LAC
-               d[i].type = FD_TYPE_UDPLAC;
-               e.data.ptr = &d[i++];
-               epoll_ctl(epollfd, EPOLL_CTL_ADD, udplacfd, &e);
-#endif
-
                d[i].type = FD_TYPE_PPPOEDISC;
                e.data.ptr = &d[i++];
                epoll_ctl(epollfd, EPOLL_CTL_ADD, pppoediscfd, &e);
@@ -4040,6 +4088,14 @@ static void mainloop(void)
                d[i].type = FD_TYPE_PPPOESESS;
                e.data.ptr = &d[i++];
                epoll_ctl(epollfd, EPOLL_CTL_ADD, pppoesessfd, &e);
+
+               for (j = 0; j < config->nbudpfd; j++)
+               {
+                       d[i].type = FD_TYPE_UDP;
+                       d[i].index = j;
+                       e.data.ptr = &d[i++];
+                       epoll_ctl(epollfd, EPOLL_CTL_ADD, udpfd[j], &e);
+               }
        }
 
 #ifdef BGP
@@ -4101,16 +4157,12 @@ static void mainloop(void)
                        struct in_addr local;
                        socklen_t alen;
                        int c, s;
-                       int udp_ready = 0;
-#ifdef LAC
-                       int udplac_ready = 0;
-                       int udplac_pkts = 0;
-#endif
+                       int udp_ready[MAX_UDPFD + 1] = INIT_TABUDPVAR;
                        int pppoesess_ready = 0;
                        int pppoesess_pkts = 0;
                        int tun_ready = 0;
                        int cluster_ready = 0;
-                       int udp_pkts = 0;
+                       int udp_pkts[MAX_UDPFD + 1] = INIT_TABUDPVAR;
                        int tun_pkts = 0;
                        int cluster_pkts = 0;
 #ifdef BGP
@@ -4144,10 +4196,7 @@ static void mainloop(void)
                                // these are handled below, with multiple interleaved reads
                                case FD_TYPE_CLUSTER:   cluster_ready++; break;
                                case FD_TYPE_TUN:       tun_ready++; break;
-                               case FD_TYPE_UDP:       udp_ready++; break;
-#ifdef LAC
-                               case FD_TYPE_UDPLAC:    udplac_ready++; break;
-#endif
+                               case FD_TYPE_UDP:       udp_ready[d->index]++; break;
                                case FD_TYPE_PPPOESESS: pppoesess_ready++; break;
 
                                case FD_TYPE_PPPOEDISC: // pppoe discovery
@@ -4188,8 +4237,8 @@ static void mainloop(void)
 
 #ifdef BGP
                                case FD_TYPE_BGP:
-                                       bgp_events[d->index] = events[i].events;
-                                       n--;
+                                       bgp_events[d->index] = events[i].events;
+                                       n--;
                                        break;
 #endif /* BGP */
 
@@ -4208,7 +4257,6 @@ static void mainloop(void)
                                                                exit(1);
                                                        }
                                                        else
-
                                                                LOG(0, 0, 0, "Got a netlink error: %s\n", strerror(-errmsg->error));
                                                }
                                                // else it's a ack
@@ -4220,7 +4268,7 @@ static void mainloop(void)
                                }
 
                                default:
-                                       LOG(0, 0, 0, "Unexpected fd type returned from epoll_wait: %d\n", d->type);
+                                       LOG(0, 0, 0, "Unexpected fd type returned from epoll_wait: %d\n", d->type);
                                }
                        }
 
@@ -4230,40 +4278,25 @@ static void mainloop(void)
 
                        for (c = 0; n && c < config->multi_read_count; c++)
                        {
-                               // L2TP
-                               if (udp_ready)
+                               for (j = 0; j < config->nbudpfd; j++)
                                {
-                                       alen = sizeof(addr);
-                                       if ((s = recvfrom(udpfd, p, size_bufp, 0, (void *) &addr, &alen)) > 0)
-                                       {
-                                               processudp(p, s, &addr);
-                                               udp_pkts++;
-                                       }
-                                       else
+                                       // L2TP and L2TP REMOTE LNS
+                                       if (udp_ready[j])
                                        {
-                                               udp_ready = 0;
-                                               n--;
+                                               alen = sizeof(addr);
+                                               if ((s = recvfrom(udpfd[j], p, size_bufp, 0, (void *) &addr, &alen)) > 0)
+                                               {
+                                                       processudp(p, s, &addr, j);
+                                                       udp_pkts[j]++;
+                                               }
+                                               else
+                                               {
+                                                       udp_ready[j] = 0;
+                                                       n--;
+                                               }
                                        }
                                }
-#ifdef LAC
-                               // L2TP REMOTE LNS
-                               if (udplac_ready)
-                               {
-                                       alen = sizeof(addr);
-                                       if ((s = recvfrom(udplacfd, p, size_bufp, 0, (void *) &addr, &alen)) > 0)
-                                       {
-                                               if (!config->disable_lac_func)
-                                                       processudp(p, s, &addr);
 
-                                               udplac_pkts++;
-                                       }
-                                       else
-                                       {
-                                               udplac_ready = 0;
-                                               n--;
-                                       }
-                               }
-#endif
                                // incoming IP
                                if (tun_ready)
                                {
@@ -4311,18 +4344,13 @@ static void mainloop(void)
                                }
                        }
 
-                       if (udp_pkts > 1 || tun_pkts > 1 || cluster_pkts > 1)
+                       if (udp_pkts[0] > 1 || tun_pkts > 1 || cluster_pkts > 1)
                                STAT(multi_read_used);
 
                        if (c >= config->multi_read_count)
                        {
-#ifdef LAC
-                               LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun %d cluster %d rmlns and %d pppoe packets\n",
-                                       config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts, udplac_pkts, pppoesess_pkts);
-#else
                                LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun %d cluster and %d pppoe packets\n",
-                                       config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts, pppoesess_pkts);
-#endif
+                                       config->multi_read_count, udp_pkts[0], tun_pkts, cluster_pkts, pppoesess_pkts);
                                STAT(multi_read_exceeded);
                                more++;
                        }
@@ -4657,9 +4685,9 @@ static void initdata(int optdebug, char *optconfig)
        }
 #endif /* BGP */
 
-#ifdef LAC
        lac_initremotelnsdata();
-#endif
+
+       grp_initdata();
 }
 
 static int assign_ip_address(sessionidt s)
@@ -4946,11 +4974,7 @@ void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, ui
 
 static int dump_session(FILE **f, sessiont *s)
 {
-#ifdef LAC
        if (!s->opened || (!s->ip && !s->forwardtosession) || !(s->cin_delta || s->cout_delta) || !*s->user || s->walled_garden)
-#else
-       if (!s->opened || !s->ip || !(s->cin_delta || s->cout_delta) || !*s->user || s->walled_garden)
-#endif
                return 1;
 
        if (!*f)
@@ -4969,6 +4993,21 @@ static int dump_session(FILE **f, sessiont *s)
                }
 
                LOG(3, 0, 0, "Dumping accounting information to %s\n", filename);
+               if(config->account_all_origin)
+               {
+               fprintf(*f, "# dslwatch.pl dump file V1.01\n"
+                       "# host: %s\n"
+                       "# endpoint: %s\n"
+                       "# time: %ld\n"
+                       "# uptime: %ld\n"
+                       "# format: username ip qos uptxoctets downrxoctets origin(L=LAC, R=Remote LNS, P=PPPOE)\n",
+                       hostname,
+                       fmtaddr(config->iftun_n_address[tunnel[s->tunnel].indexudp] ? config->iftun_n_address[tunnel[s->tunnel].indexudp] : my_address, 0),
+                       now,
+                       now - basetime);
+               }
+               else
+               {
                fprintf(*f, "# dslwatch.pl dump file V1.01\n"
                        "# host: %s\n"
                        "# endpoint: %s\n"
@@ -4976,18 +5015,32 @@ static int dump_session(FILE **f, sessiont *s)
                        "# uptime: %ld\n"
                        "# format: username ip qos uptxoctets downrxoctets\n",
                        hostname,
-                       fmtaddr(config->iftun_address ? config->iftun_address : my_address, 0),
+                       fmtaddr(config->iftun_n_address[tunnel[s->tunnel].indexudp] ? config->iftun_n_address[tunnel[s->tunnel].indexudp] : my_address, 0),
                        now,
                        now - basetime);
+               }
        }
 
        LOG(4, 0, 0, "Dumping accounting information for %s\n", s->user);
+       if(config->account_all_origin)
+       {
+       fprintf(*f, "%s %s %d %u %u %s\n",
+               s->user,                                                // username
+               fmtaddr(htonl(s->ip), 0),                               // ip
+               (s->throttle_in || s->throttle_out) ? 2 : 1,            // qos
+               (uint32_t) s->cin_delta,                                // uptxoctets
+               (uint32_t) s->cout_delta,                               // downrxoctets
+               (s->tunnel == TUNNEL_ID_PPPOE)?"P":(tunnel[s->tunnel].isremotelns?"R":"L"));    // Origin
+       }
+       else if (!tunnel[s->tunnel].isremotelns && (s->tunnel != TUNNEL_ID_PPPOE))
+       {
        fprintf(*f, "%s %s %d %u %u\n",
                s->user,                                                // username
                fmtaddr(htonl(s->ip), 0),                               // ip
                (s->throttle_in || s->throttle_out) ? 2 : 1,            // qos
                (uint32_t) s->cin_delta,                                // uptxoctets
                (uint32_t) s->cout_delta);                              // downrxoctets
+       }
 
        s->cin_delta = s->cout_delta = 0;
 
@@ -5035,9 +5088,9 @@ int main(int argc, char *argv[])
                case 'd':
                        if (fork()) exit(0);
                        setsid();
-                       freopen("/dev/null", "r", stdin);
-                       freopen("/dev/null", "w", stdout);
-                       freopen("/dev/null", "w", stderr);
+                       if(!freopen("/dev/null", "r", stdin)) LOG(0, 0, 0, "Error freopen stdin: %s\n", strerror(errno));
+                       if(!freopen("/dev/null", "w", stdout)) LOG(0, 0, 0, "Error freopen stdout: %s\n", strerror(errno));
+                       if(!freopen("/dev/null", "w", stderr)) LOG(0, 0, 0, "Error freopen stderr: %s\n", strerror(errno));
                        break;
                case 'v':
                        optdebug++;
@@ -5088,7 +5141,7 @@ int main(int argc, char *argv[])
                        LOG(0, 0, 0, "Can't set ulimit: %s\n", strerror(errno));
 
                // Make core dumps go to /tmp
-               chdir("/tmp");
+               if(chdir("/tmp")) LOG(0, 0, 0, "Error chdir /tmp: %s\n", strerror(errno));
        }
 
        if (config->scheduler_fifo)
@@ -5130,7 +5183,26 @@ int main(int argc, char *argv[])
                init_pppoe();
                LOG(1, 0, 0, "Set up on pppoe interface %s\n", config->pppoe_if_to_bind);
        }
-       initudp();
+
+       if (!config->nbmultiaddress)
+       {
+               config->bind_n_address[0] = config->bind_address;
+               config->nbmultiaddress++;
+       }
+       config->nbudpfd = config->nbmultiaddress;
+       for (i = 0; i < config->nbudpfd; i++)
+               initudp(&udpfd[i], config->bind_n_address[i]);
+       initlacudp();
+       config->indexlacudpfd = config->nbudpfd;
+       udpfd[config->indexlacudpfd] = udplacfd;
+       config->nbudpfd++;
+
+       initcontrol();
+       initdae();
+
+       // Intercept
+       snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+
        initrad();
        initippool();
 
@@ -5156,6 +5228,9 @@ int main(int argc, char *argv[])
                        LOG(0, 0, 0, "Can't lock pages: %s\n", strerror(errno));
        }
 
+       //LOG(3, 0, 0, "Debug sizeof struct: sessiont %lu, tunnelt %lu, bundlet %lu, groupsesst %lu\n",
+       //      sizeof(sessiont), sizeof(tunnelt), sizeof(bundlet), sizeof(groupsesst));
+
        mainloop();
 
        /* remove plugins (so cleanup code gets run) */
@@ -5362,14 +5437,100 @@ static void update_config()
        if (!config->radius_dae_port)
                config->radius_dae_port = DAEPORT;
 
-#ifdef LAC
        if(!config->bind_portremotelns)
                config->bind_portremotelns = L2TPLACPORT;
        if(!config->bind_address_remotelns)
                config->bind_address_remotelns = INADDR_ANY;
-#endif
+
+       if (*config->bind_multi_address)
+       {
+               char *sip = config->bind_multi_address;
+               char *n = sip;
+               char *e = config->bind_multi_address + strlen(config->bind_multi_address);
+               config->nbmultiaddress = 0;
+
+               while (*sip && (sip < e))
+               {
+                       in_addr_t ip = 0;
+                       uint8_t u = 0;
+
+                       while (n < e && (*n == ',' || *n == ' ')) n++;
+
+                       while (n < e && (isdigit(*n) || *n == '.'))
+                       {
+                                if (*n == '.')
+                                {
+                                        ip = (ip << 8) + u;
+                                        u = 0;
+                                }
+                                else
+                                       u = u * 10 + *n - '0';
+                                n++;
+                       }
+                       ip = (ip << 8) + u;
+                       n++;
+
+                       if (ip)
+                       {
+                               config->bind_n_address[config->nbmultiaddress] = htonl(ip);
+                               config->iftun_n_address[config->nbmultiaddress] = htonl(ip);
+                               config->nbmultiaddress++;
+                               LOG(1, 0, 0, "Bind address %s\n", fmtaddr(htonl(ip), 0));
+
+                               if (config->nbmultiaddress >= MAX_BINDADDR) break;
+                       }
+
+                       sip = n;
+               }
+
+               if (config->nbmultiaddress >= 1)
+               {
+                       config->bind_address = config->bind_n_address[0];
+                       config->iftun_address = config->bind_address;
+               }
+       }
+
        if(!config->iftun_address)
+       {
                config->iftun_address = config->bind_address;
+               config->iftun_n_address[0] = config->iftun_address;
+       }
+
+       if (*config->multi_hostname)
+       {
+               char *shost = config->multi_hostname;
+               char *n = shost;
+               char *e = config->multi_hostname + strlen(config->multi_hostname);
+               config->nbmultihostname = 0;
+
+               while (*shost && (shost < e))
+               {
+                       while ((n < e) && (*n == ' ' || *n == ',' || *n == '\t')) n++;
+
+                       i = 0;
+                       while (n < e && (*n != ',') && (*n != '\t'))
+                       {
+                               config->multi_n_hostname[config->nbmultihostname][i] = *n;
+                               n++;i++;
+                       }
+
+                       if (i > 0)
+                       {
+                               config->multi_n_hostname[config->nbmultihostname][i] = 0;
+                               LOG(1, 0, 0, "Bind Hostname %s\n", config->multi_n_hostname[config->nbmultihostname]);
+                               config->nbmultihostname++;
+                               if (config->nbmultihostname >= MAX_NBHOSTNAME) break;
+                       }
+
+                       shost = n;
+               }
+
+               if (config->nbmultihostname >= 1)
+               {
+                       strcpy(hostname, config->multi_n_hostname[0]);
+                       strcpy(config->hostname, hostname);
+               }
+       }
 
        if (!*config->pppoe_ac_name)
                strncpy(config->pppoe_ac_name, DEFAULT_PPPOE_AC_NAME, sizeof(config->pppoe_ac_name) - 1);
@@ -5581,6 +5742,7 @@ int sessionsetup(sessionidt s, tunnelidt t)
        if (!session[s].bundle || (bundle[session[s].bundle].num_of_links == 1))
        {
                int routed = 0;
+               groupidt g;
 
                // Add the route for this session.
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
@@ -5603,6 +5765,12 @@ int sessionsetup(sessionidt s, tunnelidt t)
                }
                else
                        cache_ipmap(session[s].ip, s);
+
+               if ((g = grp_groupbysession(s)))
+               {
+                       grp_setgrouproute(g, 1);
+                       cluster_send_groupe(g);
+               }
        }
 
        sess_local[s].lcp_authtype = 0; // RADIUS authentication complete
@@ -5689,6 +5857,10 @@ int load_session(sessionidt s, sessiont *new)
                                uncache_ipmap(session[s].ip);
                }
 
+               // remove old IPV6 routes...
+               if (session[s].ipv6route.s6_addr[0] && session[s].ipv6prefixlen)
+                       route6set(s, session[s].ipv6route, session[s].ipv6prefixlen, 0);
+
                routed = 0;
 
                // add new routes...
@@ -6163,7 +6335,7 @@ void become_master(void)
        }
 }
 
-int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc)
+int cmd_show_hist_idle(struct cli_def *cli, const char *command, char **argv, int argc)
 {
        int s, i;
        int count = 0;
@@ -6201,7 +6373,7 @@ int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc
        return CLI_OK;
 }
 
-int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc)
+int cmd_show_hist_open(struct cli_def *cli, const char *command, char **argv, int argc)
 {
        int s, i;
        int count = 0;
@@ -6427,8 +6599,6 @@ int ip_filter(uint8_t *buf, int len, uint8_t filter)
        return 0;
 }
 
-#ifdef LAC
-
 tunnelidt lac_new_tunnel()
 {
        return new_tunnel();
@@ -6447,7 +6617,7 @@ void lac_send_SCCRQ(tunnelidt t, uint8_t * auth, unsigned int auth_len)
 
        // Sent SCCRQ - Start Control Connection Request
        controlt *c = controlnew(1); // sending SCCRQ
-       controls(c, 7, hostname, 1); // host name
+       controls(c, 7, config->multi_n_hostname[tunnel[t].indexudp][0]?config->multi_n_hostname[tunnel[t].indexudp]:hostname, 1); // host name
        controls(c, 8, Vendor_name, 1); // Vendor name
        control16(c, 2, version, 1); // protocol version
        control32(c, 3, 3, 1); // framing Capabilities
@@ -6474,4 +6644,3 @@ void lac_tunnelshutdown(tunnelidt t, char *reason, int result, int error, char *
        tunnelshutdown(t, reason, result, error, msg);
 }
 
-#endif