Following development LAC functionality

[l2tpns.git] / l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index d4bb9ca..694726d 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -67,6 +67,9 @@ 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
 int nlfd = -1;                 // netlink socket
 int tunfd = -1;                        // tun interface file handle. (network device)
 int udpfd = -1;                        // UDP file handle

+#ifdef LAC
+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.
 int controlfd = -1;            // Control signal handle
 int clifd = -1;                        // Socket listening for CLI connections.
 int daefd = -1;                        // Socket listening for DAE connections.


@@ -175,6 +178,10 @@ config_descriptt config_values[] = {
 #endif
        CONFIG("echo_timeout", echo_timeout, INT),
        CONFIG("idle_echo_timeout", idle_echo_timeout, INT),
 #endif
        CONFIG("echo_timeout", echo_timeout, INT),
        CONFIG("idle_echo_timeout", idle_echo_timeout, INT),

+#ifdef LAC
+       CONFIG("disable_lac_func", disable_lac_func, BOOL),
+       CONFIG("bind_portremotelns", bind_portremotelns, SHORT),
+#endif

        { NULL, 0, 0, 0 },
 };
 
        { NULL, 0, 0, 0 },
 };
 


@@ -866,6 +873,24 @@ static void initudp(void)
                exit(1);
        }
 
                exit(1);
        }
 

+#ifdef LAC
+       // Tunnel to Remote LNS
+       memset(&addr, 0, sizeof(addr));
+       addr.sin_family = AF_INET;
+       addr.sin_port = htons(config->bind_portremotelns);
+       udplacfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+       setsockopt(udplacfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+       {
+               int flags = fcntl(udplacfd, F_GETFL, 0);
+               fcntl(udplacfd, F_SETFL, flags | O_NONBLOCK);
+       }
+       if (bind(udplacfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
+       {
+               LOG(0, 0, 0, "Error in UDP REMOTE LNS bind: %s\n", strerror(errno));
+               exit(1);
+       }
+#endif
+

        // Intercept
        snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 }
        // Intercept
        snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 }


@@ -1186,8 +1211,11 @@ void tunnelsend(uint8_t * buf, uint16_t l, tunnelidt t)
                        LOG(3, 0, t, "Control message resend try %d\n", tunnel[t].try);
                }
        }
                        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)
        if (sendto(udpfd, buf, l, 0, (void *) &addr, sizeof(addr)) < 0)

+#endif

        {
                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));
        {
                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));


@@ -2213,6 +2241,18 @@ 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
 
        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;
+               if (session[sess].forwardtosession == s)
+               {
+                       // Shutdown the linked session also.
+                       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);
        sessionclear(s);
        cluster_send_session(s);
        LOG(2, s, session[s].tunnel, "Kill session %d (%s): %s\n", s, session[s].user, reason);
        sessionclear(s);
        cluster_send_session(s);


@@ -2724,11 +2764,11 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        break;
                                case 13:    // Response
 #ifdef LAC
                                        break;
                                case 13:    // Response
 #ifdef LAC

-                                       if (istunneltolns(t))
+                                       if (tunnel[t].isremotelns)

                                        {
                                                chapresponse = calloc(17, 1);
                                                memcpy(chapresponse, b, (n < 17) ? n : 16);
                                        {
                                                chapresponse = calloc(17, 1);
                                                memcpy(chapresponse, b, (n < 17) ? n : 16);

-                                               LOG(1, s, t, "received challenge response from (REMOTE LNS)\n");
+                                               LOG(3, s, t, "received challenge response from REMOTE LNS\n");

                                        }
                                        else
 #endif /* LAC */
                                        }
                                        else
 #endif /* LAC */


@@ -2957,8 +2997,10 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                {
                                case 1:       // SCCRQ - Start Control Connection Request
                                        tunnel[t].state = TUNNELOPENING;
                                {
                                case 1:       // SCCRQ - Start Control Connection Request
                                        tunnel[t].state = TUNNELOPENING;

+                                       LOG(3, s, t, "Received SCCRQ\n");

                                        if (main_quit != QUIT_SHUTDOWN)
                                        {
                                        if (main_quit != QUIT_SHUTDOWN)
                                        {

+                                               LOG(3, s, t, "sending SCCRP\n");

                                                controlt *c = controlnew(2); // sending SCCRP
                                                control16(c, 2, version, 1); // protocol version
                                                control32(c, 3, 3, 1); // framing
                                                controlt *c = controlnew(2); // sending SCCRP
                                                control16(c, 2, version, 1); // protocol version
                                                control32(c, 3, 3, 1); // framing


@@ -2976,17 +3018,18 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        tunnel[t].state = TUNNELOPEN;
                                        tunnel[t].lastrec = time_now;
 #ifdef LAC
                                        tunnel[t].state = TUNNELOPEN;
                                        tunnel[t].lastrec = time_now;
 #ifdef LAC

-                                       LOG(1, s, t, "Recieved SCCRP (REMOTE LNS)\n");
+                                       LOG(3, s, t, "Received SCCRP\n");

                                        if (main_quit != QUIT_SHUTDOWN)
                                        {
                                        if (main_quit != QUIT_SHUTDOWN)
                                        {

-                                               if (istunneltolns(t) && chapresponse)
+                                               if (tunnel[t].isremotelns && chapresponse)

                                                {
                                                        hasht hash;
 
                                                {
                                                        hasht hash;
 

-                                                       calc_lac_auth(t, 2, hash); // id = 2 (SCCRP)
+                                                       lac_calc_rlns_auth(t, 2, hash); // id = 2 (SCCRP)

                                                        // check authenticator
                                                        if (memcmp(hash, chapresponse, 16) == 0)
                                                        {
                                                        // check authenticator
                                                        if (memcmp(hash, chapresponse, 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, 8, Vendor_name, 1); // Vendor name
                                                                controlt *c = controlnew(3); // sending SCCCN
                                                                controls(c, 7, hostname, 1); // host name
                                                                controls(c, 8, Vendor_name, 1); // Vendor name


@@ -2994,12 +3037,10 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                                                control32(c, 3, 3, 1); // framing Capabilities
                                                                control16(c, 9, t, 1); // assigned tunnel
                                                                controladd(c, 0, t); // send
                                                                control32(c, 3, 3, 1); // framing Capabilities
                                                                control16(c, 9, t, 1); // assigned tunnel
                                                                controladd(c, 0, t); // send

-
-                                                               LOG(1, s, t, "sending SCCCN (REMOTE LNS)\n");

                                                        }
                                                        else
                                                        {
                                                        }
                                                        else
                                                        {

-                                                               tunnelshutdown(t, "(REMOTE LNS) Bad chap response", 4, 0, 0);
+                                                               tunnelshutdown(t, "Bad chap response from REMOTE LNS", 4, 0, 0);

                                                        }
                                                }
                                        }
                                                        }
                                                }
                                        }


@@ -3010,11 +3051,13 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 #endif /* LAC */
                                        break;
                                case 3:       // SCCN
 #endif /* LAC */
                                        break;
                                case 3:       // SCCN

+                                       LOG(3, s, t, "Received SCCN\n");

                                        tunnel[t].state = TUNNELOPEN;
                                        tunnel[t].lastrec = time_now;
                                        controlnull(t); // ack
                                        break;
                                case 4:       // StopCCN
                                        tunnel[t].state = TUNNELOPEN;
                                        tunnel[t].lastrec = time_now;
                                        controlnull(t); // ack
                                        break;
                                case 4:       // StopCCN

+                                       LOG(3, s, t, "Received StopCCN\n");

                                        controlnull(t); // ack
                                        tunnelshutdown(t, "Stopped", 0, 0, 0); // Shut down cleanly
                                        break;
                                        controlnull(t); // ack
                                        tunnelshutdown(t, "Stopped", 0, 0, 0); // Shut down cleanly
                                        break;


@@ -3023,18 +3066,24 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        break;
                                case 7:       // OCRQ
                                        // TBA
                                        break;
                                case 7:       // OCRQ
                                        // TBA

+                                       LOG(3, s, t, "Received OCRQ\n");

                                        break;
                                case 8:       // OCRO
                                        // TBA
                                        break;
                                case 8:       // OCRO
                                        // TBA

+                                       LOG(3, s, t, "Received OCRO\n");

                                        break;
                                case 9:       // OCCN
                                        // TBA
                                        break;
                                case 9:       // OCCN
                                        // TBA

+                                       LOG(3, s, t, "Received OCCN\n");

                                        break;
                                case 10:      // ICRQ
                                        break;
                                case 10:      // ICRQ

+                                       LOG(3, s, t, "Received ICRQ\n");

                                        if (sessionfree && main_quit != QUIT_SHUTDOWN)
                                        {
                                                controlt *c = controlnew(11); // ICRP
 
                                        if (sessionfree && main_quit != QUIT_SHUTDOWN)
                                        {
                                                controlt *c = controlnew(11); // ICRP
 

+                                               LOG(3, s, t, "Sending ICRP\n");
+

                                                s = sessionfree;
                                                sessionfree = session[s].next;
                                                memset(&session[s], 0, sizeof(session[s]));
                                                s = sessionfree;
                                                sessionfree = session[s].next;
                                                memset(&session[s], 0, sizeof(session[s]));


@@ -3062,6 +3111,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 
                                        {
                                                controlt *c = controlnew(14); // CDN
 
                                        {
                                                controlt *c = controlnew(14); // CDN

+                                               LOG(3, s, t, "Sending CDN\n");

                                                if (!sessionfree)
                                                {
                                                        STAT(session_overflow);
                                                if (!sessionfree)
                                                {
                                                        STAT(session_overflow);


@@ -3076,7 +3126,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        return;
                                case 11:      // ICRP
 #ifdef LAC
                                        return;
                                case 11:      // ICRP
 #ifdef LAC

-                               LOG(1, s, t, "Recieved ICRP (REMOTE LNS)\n");
+                               LOG(3, s, t, "Received ICRP\n");

                                if (session[s].forwardtosession)
                                {
                                        controlt *c = controlnew(12); // ICCN
                                if (session[s].forwardtosession)
                                {
                                        controlt *c = controlnew(12); // ICCN


@@ -3089,11 +3139,12 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        control32(c, 19, 1, 1); // Framing Type
                                        control32(c, 24, 10000000, 1); // Tx Connect Speed
                                        controladd(c, asession, t); // send the message
                                        control32(c, 19, 1, 1); // Framing Type
                                        control32(c, 24, 10000000, 1); // Tx Connect Speed
                                        controladd(c, asession, t); // send the message

-                                       LOG(1, s, t, "Sending ICCN (REMOTE LNS)\n");
+                                       LOG(3, s, t, "Sending ICCN\n");

                                }
 #endif /* LAC */
                                        break;
                                case 12:      // ICCN
                                }
 #endif /* LAC */
                                        break;
                                case 12:      // ICCN

+                                       LOG(3, s, t, "Received ICCN\n");

                                        if (amagic == 0) amagic = time_now;
                                        session[s].magic = amagic; // set magic number
                                        session[s].flags = aflags; // set flags received
                                        if (amagic == 0) amagic = time_now;
                                        session[s].magic = amagic; // set magic number
                                        session[s].flags = aflags; // set flags received


@@ -3113,10 +3164,8 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
                                        break;
 
                                case 14:      // CDN
                                        break;
 
                                case 14:      // CDN

+                                       LOG(3, s, t, "Received CDN\n");

                                        controlnull(t); // ack
                                        controlnull(t); // ack

-#ifdef LAC
-
-#endif /* LAC */

                                        sessionshutdown(s, disc_reason, CDN_NONE, disc_cause);
                                        break;
                                case 0xFFFF:
                                        sessionshutdown(s, disc_reason, CDN_NONE, disc_cause);
                                        break;
                                case 0xFFFF:


@@ -3169,9 +3218,9 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
 #ifdef LAC
                if (session[s].forwardtosession)
                {
 #ifdef LAC
                if (session[s].forwardtosession)
                {

-                       LOG(4, s, t, "Forwarding data session to %u (REMOTE LNS)\n", session[s].forwardtosession);
-                       // Forward to Remote LNS
-                       session_forward_tolns(buf, len, s, proto);
+                       LOG(5, s, t, "Forwarding data session to session %u\n", session[s].forwardtosession);
+                       // Forward to LAC or Remote LNS session
+                       lac_session_forward(buf, len, s, proto);

                        return;
                }
 #endif /* LAC */
                        return;
                }
 #endif /* LAC */


@@ -3843,8 +3892,13 @@ static int still_busy(void)
 # include "fake_epoll.h"
 #endif
 
 # include "fake_epoll.h"
 #endif
 

+#ifdef LAC
+// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink, udplac
+#define BASE_FDS       8
+#else

 // the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink
 #define BASE_FDS       7
 // the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink
 #define BASE_FDS       7

+#endif

 
 // additional polled fds
 #ifdef BGP
 
 // additional polled fds
 #ifdef BGP


@@ -3870,8 +3924,13 @@ static void mainloop(void)
                exit(1);
        }
 
                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\n",
+               clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd, udplacfd);
+#else

        LOG(4, 0, 0, "Beginning of main loop.  clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d\n",
                clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd);
        LOG(4, 0, 0, "Beginning of main loop.  clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d\n",
                clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd);

+#endif

 
        /* setup our fds to poll for input */
        {
 
        /* setup our fds to poll for input */
        {


@@ -3911,6 +3970,12 @@ static void mainloop(void)
                d[i].type = FD_TYPE_NETLINK;
                e.data.ptr = &d[i++];
                epoll_ctl(epollfd, EPOLL_CTL_ADD, nlfd, &e);
                d[i].type = FD_TYPE_NETLINK;
                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

        }
 
 #ifdef BGP
        }
 
 #ifdef BGP


@@ -3973,6 +4038,10 @@ static void mainloop(void)
                        socklen_t alen;
                        int c, s;
                        int udp_ready = 0;
                        socklen_t alen;
                        int c, s;
                        int udp_ready = 0;

+#ifdef LAC
+                       int udplac_ready = 0;
+                       int udplac_pkts = 0;
+#endif

                        int tun_ready = 0;
                        int cluster_ready = 0;
                        int udp_pkts = 0;
                        int tun_ready = 0;
                        int cluster_ready = 0;
                        int udp_pkts = 0;


@@ -4010,7 +4079,9 @@ static void mainloop(void)
                                case FD_TYPE_CLUSTER:   cluster_ready++; break;
                                case FD_TYPE_TUN:       tun_ready++; break;
                                case FD_TYPE_UDP:       udp_ready++; break;
                                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_CONTROL: // nsctl commands
                                        alen = sizeof(addr);
                                        s = recvfromto(controlfd, buf, sizeof(buf), MSG_WAITALL, (struct sockaddr *) &addr, &alen, &local);
                                case FD_TYPE_CONTROL: // nsctl commands
                                        alen = sizeof(addr);
                                        s = recvfromto(controlfd, buf, sizeof(buf), MSG_WAITALL, (struct sockaddr *) &addr, &alen, &local);


@@ -4100,7 +4171,25 @@ static void mainloop(void)
                                                n--;
                                        }
                                }
                                                n--;
                                        }
                                }

+#ifdef LAC
+                               // L2TP REMOTE LNS
+                               if (udplac_ready)
+                               {
+                                       alen = sizeof(addr);
+                                       if ((s = recvfrom(udplacfd, buf, sizeof(buf), 0, (void *) &addr, &alen)) > 0)
+                                       {
+                                               if (!config->disable_lac_func)
+                                                       processudp(buf, s, &addr);

 
 

+                                               udplac_pkts++;
+                                       }
+                                       else
+                                       {
+                                               udplac_ready = 0;
+                                               n--;
+                                       }
+                               }
+#endif

                                // incoming IP
                                if (tun_ready)
                                {
                                // incoming IP
                                if (tun_ready)
                                {


@@ -4138,9 +4227,13 @@ static void mainloop(void)
 
                        if (c >= config->multi_read_count)
                        {
 
                        if (c >= config->multi_read_count)
                        {

+#ifdef LAC
+                               LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun and %d cluster %d rmlns packets\n",
+                                       config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts, udplac_pkts);
+#else

                                LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun and %d cluster packets\n",
                                        config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts);
                                LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun and %d cluster packets\n",
                                        config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts);

-
+#endif

                                STAT(multi_read_exceeded);
                                more++;
                        }
                                STAT(multi_read_exceeded);
                                more++;
                        }


@@ -4476,7 +4569,7 @@ static void initdata(int optdebug, char *optconfig)
 #endif /* BGP */
 
 #ifdef LAC
 #endif /* BGP */
 
 #ifdef LAC

-       initremotelnsdata();
+       lac_initremotelnsdata();

 #endif
 }
 
 #endif
 }
 


@@ -4764,7 +4857,11 @@ void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, ui
 
 static int dump_session(FILE **f, sessiont *s)
 {
 
 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)
        if (!s->opened || !s->ip || !(s->cin_delta || s->cout_delta) || !*s->user || s->walled_garden)

+#endif

                return 1;
 
        if (!*f)
                return 1;
 
        if (!*f)


@@ -5171,6 +5268,11 @@ static void update_config()
        if (!config->radius_dae_port)
                config->radius_dae_port = DAEPORT;
 
        if (!config->radius_dae_port)
                config->radius_dae_port = DAEPORT;
 

+#ifdef LAC
+       if(!config->bind_portremotelns)
+               config->bind_portremotelns = L2TPLACPORT;
+#endif
+

        // re-initialise the random number source
        initrandom(config->random_device);
 
        // re-initialise the random number source
        initrandom(config->random_device);
 


@@ -6251,7 +6353,7 @@ void lac_send_SCCRQ(tunnelidt t, uint8_t * auth, unsigned int auth_len)
        control32(c, 3, 3, 1); // framing Capabilities
        control16(c, 9, t, 1); // assigned tunnel
        controlb(c, 11, (uint8_t *) auth, auth_len, 1);  // CHAP Challenge
        control32(c, 3, 3, 1); // framing Capabilities
        control16(c, 9, t, 1); // assigned tunnel
        controlb(c, 11, (uint8_t *) auth, auth_len, 1);  // CHAP Challenge

-       LOG(1, 0, t, "Sent SCCRQ tunnel (REMOTE LNS)\n");
+       LOG(3, 0, t, "Sent SCCRQ to REMOTE LNS\n");

        controladd(c, 0, t); // send
 }
 
        controladd(c, 0, t); // send
 }
 


@@ -6263,7 +6365,7 @@ void lac_send_ICRQ(tunnelidt t, sessionidt s)
        control16(c, 14, s, 1); // assigned sesion
        call_serial_number++;
        control32(c, 15, call_serial_number, 1);  // call serial number
        control16(c, 14, s, 1); // assigned sesion
        call_serial_number++;
        control32(c, 15, call_serial_number, 1);  // call serial number

-       LOG(1, s, t, "Sent ICRQ (REMOTE LNS) (tunnel far ID %u)\n", tunnel[t].far);
+       LOG(3, s, t, "Sent ICRQ to REMOTE LNS (far ID %u)\n", tunnel[t].far);

        controladd(c, 0, t); // send
 }
 
        controladd(c, 0, t); // send
 }