X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/ca4801db5521d0dc9f7c7f854f62f27c55420558..658f6aea7b968c7db3a1c2be58c62efb091c3984:/cluster.c

diff --git a/cluster.c b/cluster.c
index c529fea..fc4d58a 100644
--- a/cluster.c
+++ b/cluster.c
@@ -1,7 +1,5 @@
 // L2TPNS Clustering Stuff
 
-char const *cvs_id_cluster = "$Id: cluster.c,v 1.39 2005/05/26 12:17:30 bodea Exp $";
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
@@ -18,11 +16,13 @@ char const *cvs_id_cluster = "$Id: cluster.c,v 1.39 2005/05/26 12:17:30 bodea Ex
 #include <malloc.h>
 #include <errno.h>
 #include <libcli.h>
+#include <linux/rtnetlink.h>
 
 #include "l2tpns.h"
 #include "cluster.h"
 #include "util.h"
 #include "tbf.h"
+#include "pppoe.h"
 
 #ifdef BGP
 #include "bgp.h"
@@ -38,11 +38,13 @@ char const *cvs_id_cluster = "$Id: cluster.c,v 1.39 2005/05/26 12:17:30 bodea Ex
  */
 
 // Module variables.
-int cluster_sockfd = 0;			// The filedescriptor for the cluster communications port.
+extern int cluster_sockfd;		// The filedescriptor for the cluster communications port.
 
 in_addr_t my_address = 0;		// The network address of my ethernet port.
 static int walk_session_number = 0;	// The next session to send when doing the slow table walk.
+static int walk_bundle_number = 0;	// The next bundle to send when doing the slow table walk.
 static int walk_tunnel_number = 0;	// The next tunnel to send when doing the slow table walk.
+static int walk_groupe_number = 0;	// The next groupe to send when doing the slow table walk.
 int forked = 0;				// Sanity check: CLI must not diddle with heartbeat table
 
 #define MAX_HEART_SIZE (8192)	// Maximum size of heartbeat packet. Must be less than max IP packet size :)
@@ -56,7 +58,7 @@ static struct {
 static struct {
 	int seq;
 	int size;
-	char data[MAX_HEART_SIZE];
+	uint8_t data[MAX_HEART_SIZE];
 } past_hearts[HB_HISTORY_SIZE];	// Ring buffer of heartbeats that we've recently sent out. Needed so
 				// we can re-transmit if needed.
 
@@ -85,7 +87,9 @@ int cluster_init()
 	int opt;
 
 	config->cluster_undefined_sessions = MAXSESSION-1;
+	config->cluster_undefined_bundles = MAXBUNDLE-1;
 	config->cluster_undefined_tunnels = MAXTUNNEL-1;
+	config->cluster_undefined_groupes = MAXGROUPE-1;
 
 	if (!config->cluster_address)
 		return 0;
@@ -127,6 +131,15 @@ int cluster_init()
 	opt = 0;	// Turn off multicast loopback.
 	setsockopt(cluster_sockfd, IPPROTO_IP, IP_MULTICAST_LOOP, &opt, sizeof(opt));
 
+	if (config->cluster_mcast_ttl != 1)
+	{
+		uint8_t ttl = 0;
+		if (config->cluster_mcast_ttl > 0)
+			ttl = config->cluster_mcast_ttl < 256 ? config->cluster_mcast_ttl : 255;
+
+		setsockopt(cluster_sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl));
+	}
+
 	if (setsockopt(cluster_sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
 	{
 		LOG(0, 0, 0, "Failed to setsockopt (join mcast group): %s\n", strerror(errno));
@@ -178,7 +191,7 @@ static int cluster_send_data(void *data, int datalen)
 // Maintains the format. Assumes that the caller
 // has passed in a big enough buffer!
 //
-static void add_type(char **p, int type, int more, char *data, int size)
+static void add_type(uint8_t **p, int type, int more, uint8_t *data, int size)
 {
 	*((uint32_t *) (*p)) = type;
 	*p += sizeof(uint32_t);
@@ -218,7 +231,8 @@ static void cluster_uptodate(void)
 	if (config->cluster_iam_uptodate)
 		return;
 
-	if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels)
+	if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels ||
+		config->cluster_undefined_bundles || config->cluster_undefined_groupes)
 		return;
 
 	config->cluster_iam_uptodate = 1;
@@ -231,7 +245,7 @@ static void cluster_uptodate(void)
 // Send a unicast UDP packet to a peer with 'data' as the
 // contents.
 //
-static int peer_send_data(in_addr_t peer, char *data, int size)
+static int peer_send_data(in_addr_t peer, uint8_t *data, int size)
 {
 	struct sockaddr_in addr = {0};
 
@@ -259,10 +273,10 @@ static int peer_send_data(in_addr_t peer, char *data, int size)
 //
 // Send a structured message to a peer with a single element of type 'type'.
 //
-static int peer_send_message(in_addr_t peer, int type, int more, char *data, int size)
+static int peer_send_message(in_addr_t peer, int type, int more, uint8_t *data, int size)
 {
-	char buf[65536];	// Vast overkill.
-	char *p = buf;
+	uint8_t buf[65536];	// Vast overkill.
+	uint8_t *p = buf;
 
 	LOG(4, 0, 0, "Sending message to peer (type %d, more %d, size %d)\n", type, more, size);
 	add_type(&p, type, more, data, size);
@@ -270,16 +284,36 @@ static int peer_send_message(in_addr_t peer, int type, int more, char *data, int
 	return peer_send_data(peer, buf, (p-buf) );
 }
 
-//
+// send a packet to the master
+static int _forward_packet(uint8_t *data, int size, in_addr_t addr, int port, int type)
+{
+	uint8_t buf[65536];	// Vast overkill.
+	uint8_t *p = buf;
+
+	if (!config->cluster_master_address) // No election has been held yet. Just skip it.
+		return -1;
+
+	LOG(4, 0, 0, "Forwarding packet from %s to master (size %d)\n", fmtaddr(addr, 0), size);
+
+	STAT(c_forwarded);
+	add_type(&p, type, addr, (uint8_t *) &port, sizeof(port)); // ick. should be uint16_t
+	memcpy(p, data, size);
+	p += size;
+
+	return peer_send_data(config->cluster_master_address, buf, (p - buf));
+}
+
+// 
 // Forward a state changing packet to the master.
 //
 // The master just processes the payload as if it had
 // received it off the tun device.
-//
-int master_forward_packet(char *data, int size, in_addr_t addr, int port)
+//(note: THIS ROUTINE WRITES TO pack[-6]).
+int master_forward_packet(uint8_t *data, int size, in_addr_t addr, uint16_t port, uint16_t indexudp)
 {
-	char buf[65536];	// Vast overkill.
-	char *p = buf;
+	uint8_t *p = data - (3 * sizeof(uint32_t));
+	uint8_t *psave = p;
+	uint32_t indexandport = port | ((indexudp << 16) & 0xFFFF0000);
 
 	if (!config->cluster_master_address) // No election has been held yet. Just skip it.
 		return -1;
@@ -287,11 +321,33 @@ int master_forward_packet(char *data, int size, in_addr_t addr, int port)
 	LOG(4, 0, 0, "Forwarding packet from %s to master (size %d)\n", fmtaddr(addr, 0), size);
 
 	STAT(c_forwarded);
-	add_type(&p, C_FORWARD, addr, (char *) &port, sizeof(port));
-	memcpy(p, data, size);
-	p += size;
+	add_type(&p, C_FORWARD, addr, (uint8_t *) &indexandport, sizeof(indexandport));
 
-	return peer_send_data(config->cluster_master_address, buf, (p - buf));
+	return peer_send_data(config->cluster_master_address, psave, size + (3 * sizeof(uint32_t)));
+}
+
+// Forward PPPOE packet to the master.
+//(note: THIS ROUTINE WRITES TO pack[-4]).
+int master_forward_pppoe_packet(uint8_t *data, int size, uint8_t codepad)
+{
+	uint8_t *p = data - (2 * sizeof(uint32_t));
+	uint8_t *psave = p;
+
+	if (!config->cluster_master_address) // No election has been held yet. Just skip it.
+		return -1;
+
+	LOG(4, 0, 0, "Forward PPPOE packet to master, code %s (size %d)\n", get_string_codepad(codepad), size);
+
+	STAT(c_forwarded);
+	add_type(&p, C_PPPOE_FORWARD, codepad, NULL, 0);
+
+	return peer_send_data(config->cluster_master_address, psave, size + (2 * sizeof(uint32_t)));
+}
+
+// Forward a DAE RADIUS packet to the master.
+int master_forward_dae_packet(uint8_t *data, int size, in_addr_t addr, int port)
+{
+	return _forward_packet(data, size, addr, port, C_FORWARD_DAE);
 }
 
 //
@@ -301,10 +357,10 @@ int master_forward_packet(char *data, int size, in_addr_t addr, int port)
 // token bucket queue, and lets normal processing take care
 // of it.
 //
-int master_throttle_packet(int tbfid, char *data, int size)
+int master_throttle_packet(int tbfid, uint8_t *data, int size)
 {
-	char buf[65536];	// Vast overkill.
-	char *p = buf;
+	uint8_t buf[65536];	// Vast overkill.
+	uint8_t *p = buf;
 
 	if (!config->cluster_master_address) // No election has been held yet. Just skip it.
 		return -1;
@@ -326,10 +382,10 @@ int master_throttle_packet(int tbfid, char *data, int size)
 //
 // (Note that this must be called with the tun header
 // as the start of the data).
-int master_garden_packet(sessionidt s, char *data, int size)
+int master_garden_packet(sessionidt s, uint8_t *data, int size)
 {
-	char buf[65536];	// Vast overkill.
-	char *p = buf;
+	uint8_t buf[65536];	// Vast overkill.
+	uint8_t *p = buf;
 
 	if (!config->cluster_master_address) // No election has been held yet. Just skip it.
 		return -1;
@@ -342,11 +398,33 @@ int master_garden_packet(sessionidt s, char *data, int size)
 
 }
 
+//
+// Forward a MPPP packet to the master for handling.
+//
+// (Note that this must be called with the tun header
+// as the start of the data).
+// (i.e. this routine writes to data[-8]).
+int master_forward_mppp_packet(sessionidt s, uint8_t *data, int size)
+{
+	uint8_t *p = data - (2 * sizeof(uint32_t));
+	uint8_t *psave = p;
+
+	if (!config->cluster_master_address) // No election has been held yet. Just skip it.
+		return -1;
+
+	LOG(4, 0, 0, "Forward MPPP packet to master (size %d)\n", size);
+
+	add_type(&p, C_MPPP_FORWARD, s, NULL, 0);
+
+	return peer_send_data(config->cluster_master_address, psave, size + (2 * sizeof(uint32_t)));
+
+}
+
 //
 // Send a chunk of data as a heartbeat..
 // We save it in the history buffer as we do so.
 //
-static void send_heartbeat(int seq, char *data, int size)
+static void send_heartbeat(int seq, uint8_t *data, int size)
 {
 	int i;
 
@@ -368,8 +446,8 @@ static void send_heartbeat(int seq, char *data, int size)
 //
 void cluster_send_ping(time_t basetime)
 {
-	char buff[100 + sizeof(pingt)];
-	char *p = buff;
+	uint8_t buff[100 + sizeof(pingt)];
+	uint8_t *p = buff;
 	pingt x;
 
 	if (config->cluster_iam_master && basetime)		// We're heartbeating so no need to ping.
@@ -379,10 +457,11 @@ void cluster_send_ping(time_t basetime)
 
 	x.ver = 1;
 	x.addr = config->bind_address;
-	x.undef = config->cluster_undefined_sessions + config->cluster_undefined_tunnels;
+	x.undef = config->cluster_undefined_sessions + config->cluster_undefined_tunnels +
+			config->cluster_undefined_groupes + config->cluster_undefined_bundles;
 	x.basetime = basetime;
 
-	add_type(&p, C_PING, basetime, (char *) &x, sizeof(x));
+	add_type(&p, C_PING, basetime, (uint8_t *) &x, sizeof(x));
 	cluster_send_data(buff, (p-buff) );
 }
 
@@ -402,10 +481,10 @@ void master_update_counts(void)
 	if (config->cluster_iam_master)		// Only happens on the slaves.
 		return;
 
-	if (!config->cluster_master_address)		// If we don't have a master, skip it for a while.
+	if (!config->cluster_master_address)	// If we don't have a master, skip it for a while.
 		return;
 
-	i = MAX_B_RECS * 5; // Examine max 2000 sessions;
+	i = MAX_B_RECS * 5; // Examine max 3000 sessions;
 	if (config->cluster_highest_sessionid > i)
 		i = config->cluster_highest_sessionid;
 
@@ -416,17 +495,20 @@ void master_update_counts(void)
 			walk_session_number = 1;
 
 		if (!sess_local[walk_session_number].cin && !sess_local[walk_session_number].cout)
-			continue; // Unused. Skip it.
+			continue; // Unchanged. Skip it.
 
 		b[c].sid = walk_session_number;
-		b[c].in = sess_local[walk_session_number].cin;
-		b[c].out = sess_local[walk_session_number].cout;
-
-		if (++c > MAX_B_RECS)	// Send a max of 400 elements in a packet.
-			break;
+		b[c].pin = sess_local[walk_session_number].pin;
+		b[c].pout = sess_local[walk_session_number].pout;
+		b[c].cin = sess_local[walk_session_number].cin;
+		b[c].cout = sess_local[walk_session_number].cout;
 
 			// Reset counters.
+		sess_local[walk_session_number].pin = sess_local[walk_session_number].pout = 0;
 		sess_local[walk_session_number].cin = sess_local[walk_session_number].cout = 0;
+
+		if (++c > MAX_B_RECS)	// Send a max of 600 elements in a packet.
+			break;
 	}
 
 	if (!c)		// Didn't find any that changes. Get out of here!
@@ -435,7 +517,7 @@ void master_update_counts(void)
 
 			// Forward the data to the master.
 	LOG(4, 0, 0, "Sending byte counters to master (%d elements)\n", c);
-	peer_send_message(config->cluster_master_address, C_BYTES, c, (char *) &b, sizeof(b[0]) * c);
+	peer_send_message(config->cluster_master_address, C_BYTES, c, (uint8_t *) &b, sizeof(b[0]) * c);
 	return;
 }
 
@@ -490,7 +572,7 @@ void cluster_check_slaves(void)
 //
 void cluster_check_master(void)
 {
-	int i, count, tcount, high_unique_id = 0;
+	int i, count, high_unique_id = 0;
 	int last_free = 0;
 	clockt t = TIME;
 	static int probed = 0;
@@ -524,9 +606,14 @@ void cluster_check_master(void)
 		return;	// Everything's ok!
 
 	config->cluster_last_hb = TIME + 1;	// Just the one election thanks.
+	config->cluster_master_address = 0;
 
 	LOG(0, 0, 0, "Master timed out! Holding election...\n");
 
+	// In the process of shutting down, can't be master
+	if (main_quit)
+		return;
+
 	for (i = have_peers = 0; i < num_peers; i++)
 	{
 		if ((peers[i].timestamp + config->cluster_hb_timeout) < t)
@@ -555,7 +642,7 @@ void cluster_check_master(void)
 		// to become a master!!!
 
 	config->cluster_iam_master = 1;
-	config->cluster_master_address = 0;
+	pppoe_send_garp(); // gratuitous arp of the pppoe interface
 
 	LOG(0, 0, 0, "I am declaring myself the master!\n");
 
@@ -572,7 +659,7 @@ void cluster_check_master(void)
 		// Count the highest used tunnel number as well.
 		//
 	config->cluster_highest_tunnelid = 0;
-	for (i = 0, tcount = 0; i < MAXTUNNEL; ++i) {
+	for (i = 0; i < MAXTUNNEL; ++i) {
 		if (tunnel[i].state == TUNNELUNDEF)
 			tunnel[i].state = TUNNELFREE;
 
@@ -580,6 +667,33 @@ void cluster_check_master(void)
 			config->cluster_highest_tunnelid = i;
 	}
 
+		//
+                // Go through and mark all the bundles as defined.
+                // Count the highest used bundle number as well.
+                //
+        config->cluster_highest_bundleid = 0;
+        for (i = 0; i < MAXBUNDLE; ++i) {
+                if (bundle[i].state == BUNDLEUNDEF)
+                        bundle[i].state = BUNDLEFREE;
+
+                if (bundle[i].state != BUNDLEFREE && i > config->cluster_highest_bundleid)
+                        config->cluster_highest_bundleid = i;
+        }
+
+		//
+		// Go through and mark all the groupes as defined.
+		// Count the highest used groupe number as well.
+		//
+		config->cluster_highest_groupeid = 0;
+		for (i = 0; i < MAXGROUPE; ++i)
+		{
+			if (grpsession[i].state == GROUPEUNDEF)
+				grpsession[i].state = GROUPEFREE;
+
+			if (grpsession[i].state != GROUPEFREE && i > config->cluster_highest_groupeid)
+				config->cluster_highest_groupeid = i;
+		}
+
 		//
 		// Go through and mark all the sessions as being defined.
 		// reset the idle timeouts.
@@ -605,18 +719,22 @@ void cluster_check_master(void)
 		}
 
 			// Reset idle timeouts..
-		session[i].last_packet = time_now;
+		session[i].last_packet = session[i].last_data = time_now;
 
 			// Reset die relative to our uptime rather than the old master's
 		if (session[i].die) session[i].die = TIME;
 
-			// Accumulate un-sent byte counters.
-		session[i].cin += sess_local[i].cin;
-		session[i].cout += sess_local[i].cout;
-		session[i].total_cin += sess_local[i].cin;
-		session[i].total_cout += sess_local[i].cout;
+			// Accumulate un-sent byte/packet counters.
+		increment_counter(&session[i].cin, &session[i].cin_wrap, sess_local[i].cin);
+		increment_counter(&session[i].cout, &session[i].cout_wrap, sess_local[i].cout);
+		session[i].cin_delta += sess_local[i].cin;
+		session[i].cout_delta += sess_local[i].cout;
+
+		session[i].pin += sess_local[i].pin;
+		session[i].pout += sess_local[i].pout;
 
 		sess_local[i].cin = sess_local[i].cout = 0;
+		sess_local[i].pin = sess_local[i].pout = 0;
 
 		sess_local[i].radius = 0;	// Reset authentication as the radius blocks aren't up to date.
 
@@ -637,11 +755,13 @@ void cluster_check_master(void)
 	rebuild_address_pool();
 
 		// If we're not the very first master, this is a big issue!
-	if(count>0)
+	if (count > 0)
 		LOG(0, 0, 0, "Warning: Fixed %d uninitialized sessions in becoming master!\n", count);
 
 	config->cluster_undefined_sessions = 0;
+	config->cluster_undefined_bundles = 0;
 	config->cluster_undefined_tunnels = 0;
+	config->cluster_undefined_groupes = 0;
 	config->cluster_iam_uptodate = 1; // assume all peers are up-to-date
 
 	// FIXME. We need to fix up the tunnel control message
@@ -658,7 +778,7 @@ void cluster_check_master(void)
 // we fix it up here, and we ensure that the 'first free session'
 // pointer is valid.
 //
-static void cluster_check_sessions(int highsession, int freesession_ptr, int hightunnel)
+static void cluster_check_sessions(int highsession, int freesession_ptr, int highbundle, int hightunnel, int highgroupe)
 {
 	int i;
 
@@ -667,7 +787,8 @@ static void cluster_check_sessions(int highsession, int freesession_ptr, int hig
 	if (config->cluster_iam_uptodate)
 		return;
 
-	if (highsession > config->cluster_undefined_sessions && hightunnel > config->cluster_undefined_tunnels)
+	if (highsession > config->cluster_undefined_sessions && highbundle > config->cluster_undefined_bundles &&
+		highgroupe > config->cluster_undefined_groupes && hightunnel > config->cluster_undefined_tunnels)
 		return;
 
 		// Clear out defined sessions, counting the number of
@@ -683,6 +804,19 @@ static void cluster_check_sessions(int highsession, int freesession_ptr, int hig
 			++config->cluster_undefined_sessions;
 	}
 
+		// Clear out defined bundles, counting the number of
+		// undefs remaining.
+	config->cluster_undefined_bundles = 0;
+	for (i = 1 ; i < MAXBUNDLE; ++i) {
+		if (i > highbundle) {
+			if (bundle[i].state == BUNDLEUNDEF) bundle[i].state = BUNDLEFREE; // Defined.
+			continue;
+		}
+
+		if (bundle[i].state == BUNDLEUNDEF)
+			++config->cluster_undefined_bundles;
+	}
+
 		// Clear out defined tunnels, counting the number of
 		// undefs remaining.
 	config->cluster_undefined_tunnels = 0;
@@ -696,10 +830,23 @@ static void cluster_check_sessions(int highsession, int freesession_ptr, int hig
 			++config->cluster_undefined_tunnels;
 	}
 
+	// Clear out defined groupe, counting the number of
+	// undefs remaining.
+	config->cluster_undefined_groupes = 0;
+	for (i = 1 ; i < MAXGROUPE; ++i) {
+		if (i > highgroupe) {
+			if (grpsession[i].state == GROUPEUNDEF) grpsession[i].state = GROUPEFREE; // Defined.
+			continue;
+		}
+
+		if (grpsession[i].state == GROUPEUNDEF)
+			++config->cluster_undefined_groupes;
+	}
 
-	if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels) {
-		LOG(2, 0, 0, "Cleared undefined sessions/tunnels. %d sess (high %d), %d tunn (high %d)\n",
-			config->cluster_undefined_sessions, highsession, config->cluster_undefined_tunnels, hightunnel);
+	if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels || config->cluster_undefined_bundles || config->cluster_undefined_groupes) {
+		LOG(2, 0, 0, "Cleared undefined sessions/bundles/tunnels. %d sess (high %d), %d bund (high %d), %d grp (high %d), %d tunn (high %d)\n",
+			config->cluster_undefined_sessions, highsession, config->cluster_undefined_bundles, highbundle,
+			config->cluster_undefined_groupes, highgroupe, config->cluster_undefined_tunnels, hightunnel);
 		return;
 	}
 
@@ -709,7 +856,7 @@ static void cluster_check_sessions(int highsession, int freesession_ptr, int hig
 		cluster_uptodate();
 }
 
-static int hb_add_type(char **p, int type, int id)
+static int hb_add_type(uint8_t **p, int type, int id)
 {
 	switch (type) {
 		case C_CSESSION: { // Compressed C_SESSION.
@@ -723,13 +870,55 @@ static int hb_add_type(char **p, int type, int id)
 				// Did we compress the full structure, and is the size actually
 				// reduced??
 			if ( (d - orig) == sizeof(sessiont) && size < sizeof(sessiont) ) {
-				add_type(p, C_CSESSION, id, (char *) c, size);
+				add_type(p, C_CSESSION, id, c, size);
+				break;
+			}
+			// Failed to compress : Fall through.
+		}
+		case C_SESSION:
+		    	add_type(p, C_SESSION, id, (uint8_t *) &session[id], sizeof(sessiont));
+			break;
+
+		case C_CBUNDLE: { // Compressed C_BUNDLE
+                        uint8_t c[sizeof(bundlet) * 2]; // Bigger than worst case.
+                        uint8_t *d = (uint8_t *) &bundle[id];
+                        uint8_t *orig = d;
+                        int size;
+
+                        size = rle_compress( &d,  sizeof(bundlet), c, sizeof(c) );
+
+                                // Did we compress the full structure, and is the size actually
+                                // reduced??
+                        if ( (d - orig) == sizeof(bundlet) && size < sizeof(bundlet) ) {
+                                add_type(p, C_CBUNDLE, id, c, size);
+                                break;
+                        }
+                        // Failed to compress : Fall through.
+                }
+
+		case C_BUNDLE:
+		    	add_type(p, C_BUNDLE, id, (uint8_t *) &bundle[id], sizeof(bundlet));
+			break;
+
+		case C_CGROUPE: { // Compressed C_GROUPE
+			uint8_t c[sizeof(groupsesst) * 2]; // Bigger than worst case.
+			uint8_t *d = (uint8_t *) &grpsession[id];
+			uint8_t *orig = d;
+			int size;
+
+			size = rle_compress( &d,  sizeof(groupsesst), c, sizeof(c) );
+
+			// Did we compress the full structure, and is the size actually
+			// reduced??
+			if ( (d - orig) == sizeof(groupsesst) && size < sizeof(groupsesst) )
+			{
+				add_type(p, C_CGROUPE, id, c, size);
 				break;
 			}
 			// Failed to compress : Fall through.
 		}
-		case C_SESSION: add_type(p, C_SESSION, id,
-			(char *) &session[id], sizeof(sessiont));
+		case C_GROUPE:
+			add_type(p, C_GROUPE, id, (uint8_t *) &grpsession[id], sizeof(groupsesst));
 			break;
 
 		case C_CTUNNEL: { // Compressed C_TUNNEL
@@ -748,8 +937,8 @@ static int hb_add_type(char **p, int type, int id)
 			}
 			// Failed to compress : Fall through.
 		}
-		case C_TUNNEL: add_type(p, C_TUNNEL, id,
-			(char *) &tunnel[id], sizeof(tunnelt));
+		case C_TUNNEL:
+		    	add_type(p, C_TUNNEL, id, (uint8_t *) &tunnel[id], sizeof(tunnelt));
 			break;
 		default:
 			LOG(0, 0, 0, "Found an invalid type in heart queue! (%d)\n", type);
@@ -764,10 +953,10 @@ static int hb_add_type(char **p, int type, int id)
 //
 void cluster_heartbeat()
 {
-	int i, count = 0, tcount = 0;
-	char buff[MAX_HEART_SIZE + sizeof(heartt) + sizeof(int) ];
+	int i, count = 0, tcount = 0, bcount = 0, gcount = 0;
+	uint8_t buff[MAX_HEART_SIZE + sizeof(heartt) + sizeof(int) ];
 	heartt h;
-	char *p = buff;
+	uint8_t *p = buff;
 
 	if (!config->cluster_iam_master)	// Only the master does this.
 		return;
@@ -785,13 +974,17 @@ void cluster_heartbeat()
 	h.highsession = config->cluster_highest_sessionid;
 	h.freesession = sessionfree;
 	h.hightunnel = config->cluster_highest_tunnelid;
+	h.highbundle = config->cluster_highest_bundleid;
+	h.highgroupe = config->cluster_highest_groupeid;
 	h.size_sess = sizeof(sessiont);		// Just in case.
+	h.size_bund = sizeof(bundlet);
 	h.size_tunn = sizeof(tunnelt);
+	h.nextgrpid = gnextgrpid;
 	h.interval = config->cluster_hb_interval;
 	h.timeout  = config->cluster_hb_timeout;
 	h.table_version = config->cluster_table_version;
 
-	add_type(&p, C_HEARTBEAT, HB_VERSION, (char *) &h, sizeof(h));
+	add_type(&p, C_HEARTBEAT, HB_VERSION, (uint8_t *) &h, sizeof(h));
 
 	for (i = 0; i < config->cluster_num_changes; ++i) {
 		hb_add_type(&p, cluster_changes[i].type, cluster_changes[i].id);
@@ -805,7 +998,7 @@ void cluster_heartbeat()
 
 		//
 		// Fill out the packet with sessions from the session table...
-		// (not forgetting to leave space so we can get some tunnels in too )
+		// (not forgetting to leave space so we can get some tunnels,bundle,groupe in too )
 	while ( (p + sizeof(uint32_t) * 2 + sizeof(sessiont) * 2 ) < (buff + MAX_HEART_SIZE) ) {
 
 		if (!walk_session_number)	// session #0 isn't valid.
@@ -820,24 +1013,58 @@ void cluster_heartbeat()
 		++count;			// Count the number of extra sessions we're sending.
 	}
 
-		//
-		// Fill out the packet with tunnels from the tunnel table...
-		// This effectively means we walk the tunnel table more quickly
-		// than the session table. This is good because stuffing up a 
-		// tunnel is a much bigger deal than stuffing up a session.
-		//
-	while ( (p + sizeof(uint32_t) * 2 + sizeof(tunnelt) ) < (buff + MAX_HEART_SIZE) ) {
+	//
+	// Fill out the packet with tunnels from the tunnel table...
+	// This effectively means we walk the tunnel table more quickly
+	// than the session table. This is good because stuffing up a
+	// tunnel is a much bigger deal than stuffing up a session.
+	//
+	int maxsize = (sizeof(tunnelt) < sizeof(bundlet)) ? sizeof(bundlet):sizeof(tunnelt);
+	maxsize = (sizeof(groupsesst) < maxsize) ? maxsize:sizeof(groupsesst);
+	maxsize += (sizeof(uint32_t) * 2);
+
+	// Fill out the packet with tunnels,bundlets, groupes from the tables...
+	while ( (p + maxsize) < (buff + MAX_HEART_SIZE) )
+	{
+		if ((tcount >= config->cluster_highest_tunnelid) &&
+			(bcount >= config->cluster_highest_bundleid) &&
+			(gcount >= config->cluster_highest_groupeid))
+				break;
 
-		if (!walk_tunnel_number)	// tunnel #0 isn't valid.
-			++walk_tunnel_number;
+		if ( ((p + sizeof(uint32_t) * 2 + sizeof(tunnelt) ) < (buff + MAX_HEART_SIZE)) &&
+			 (tcount < config->cluster_highest_tunnelid))
+		{
+			if (!walk_tunnel_number)	// tunnel #0 isn't valid.
+				++walk_tunnel_number;
 
-		if (tcount >= config->cluster_highest_tunnelid)
-			break;
+			hb_add_type(&p, C_CTUNNEL, walk_tunnel_number);
+			walk_tunnel_number = (1+walk_tunnel_number)%(config->cluster_highest_tunnelid+1);	// +1 avoids divide by zero.
 
-		hb_add_type(&p, C_CTUNNEL, walk_tunnel_number);
-		walk_tunnel_number = (1+walk_tunnel_number)%(config->cluster_highest_tunnelid+1);	// +1 avoids divide by zero.
+			++tcount;
+		}
 
-		++tcount;
+		if ( ((p + sizeof(uint32_t) * 2 + sizeof(bundlet) ) < (buff + MAX_HEART_SIZE)) &&
+			 (bcount < config->cluster_highest_bundleid))
+		{
+			if (!walk_bundle_number)        // bundle #0 isn't valid.
+				++walk_bundle_number;
+
+			hb_add_type(&p, C_CBUNDLE, walk_bundle_number);
+			walk_bundle_number = (1+walk_bundle_number)%(config->cluster_highest_bundleid+1);	// +1 avoids divide by zero.
+
+			++bcount;
+		}
+
+		if ( ((p + sizeof(uint32_t) * 2 + sizeof(groupsesst) ) < (buff + MAX_HEART_SIZE)) &&
+			 (gcount < config->cluster_highest_groupeid))
+		{
+			if (!walk_groupe_number)	// groupe #0 isn't valid.
+				++walk_groupe_number;
+
+			hb_add_type(&p, C_CGROUPE, walk_groupe_number);
+			walk_groupe_number = (1+walk_groupe_number)%(config->cluster_highest_groupeid+1);	// +1 avoids divide by zero.
+			++gcount;
+		}
 	}
 
 		//
@@ -848,11 +1075,11 @@ void cluster_heartbeat()
 		exit(1);
 	}
 
-	LOG(3, 0, 0, "Sending v%d heartbeat #%d, change #%" PRIu64 " with %d changes "
-		     "(%d x-sess, %d x-tunnels, %d highsess, %d hightun, size %d)\n",
+	LOG(4, 0, 0, "Sending v%d heartbeat #%d, change #%" PRIu64 " with %d changes "
+		     "(%d x-sess, %d x-bundles, %d x-tunnels, %d x-groupes, %d highsess, %d highbund, %d hightun, %d highgrp, size %d)\n",
 	    HB_VERSION, h.seq, h.table_version, config->cluster_num_changes,
-	    count, tcount, config->cluster_highest_sessionid,
-	    config->cluster_highest_tunnelid, (int) (p - buff));
+	    count, bcount, tcount, gcount, config->cluster_highest_sessionid, config->cluster_highest_bundleid,
+	    config->cluster_highest_tunnelid, config->cluster_highest_groupeid, (int) (p - buff));
 
 	config->cluster_num_changes = 0;
 
@@ -869,12 +1096,20 @@ static int type_changed(int type, int id)
 	int i;
 
 	for (i = 0 ; i < config->cluster_num_changes ; ++i)
-		if ( cluster_changes[i].id == id &&
-			cluster_changes[i].type == type)
-			return 0;	// Already marked for change.
+	{
+		if ( cluster_changes[i].id == id && cluster_changes[i].type == type)
+		{
+			// Already marked for change, remove it
+			--config->cluster_num_changes;
+			memmove(&cluster_changes[i],
+					&cluster_changes[i+1],
+					(config->cluster_num_changes - i) * sizeof(cluster_changes[i]));
+			break;
+		}
+	}
 
-	cluster_changes[i].type = type;
-	cluster_changes[i].id = id;
+	cluster_changes[config->cluster_num_changes].type = type;
+	cluster_changes[config->cluster_num_changes].id = id;
 	++config->cluster_num_changes;
 
 	if (config->cluster_num_changes > MAX_CHANGES)
@@ -883,7 +1118,6 @@ static int type_changed(int type, int id)
 	return 1;
 }
 
-
 // A particular session has been changed!
 int cluster_send_session(int sid)
 {
@@ -900,6 +1134,29 @@ int cluster_send_session(int sid)
 	return type_changed(C_CSESSION, sid);
 }
 
+// A particular bundle has been changed!
+int cluster_send_bundle(int bid)
+{
+	if (!config->cluster_iam_master) {
+		LOG(0, 0, bid, "I'm not a master, but I just tried to change a bundle!\n");
+		return -1;
+	}
+
+	return type_changed(C_CBUNDLE, bid);
+}
+
+// A particular groupe has been changed!
+int cluster_send_groupe(int gid)
+{
+	if (!config->cluster_iam_master)
+	{
+		LOG(0, 0, gid, "I'm not a master, but I just tried to change a groupe!\n");
+		return -1;
+	}
+
+	return type_changed(C_CGROUPE, gid);
+}
+
 // A particular tunnel has been changed!
 int cluster_send_tunnel(int tid)
 {
@@ -1005,7 +1262,6 @@ static int cluster_add_peer(in_addr_t peer, time_t basetime, pingt *pp, int size
 		config->cluster_master_address = 0;
 		config->cluster_last_hb = 0; // Force an election.
 		cluster_check_master();
-		return 0;
 	}
 
 	if (i >= num_peers)
@@ -1052,6 +1308,16 @@ static int cluster_set_master(in_addr_t peer, in_addr_t master)
 		fmtaddr(master, 1));
 
 	config->cluster_master_address = master;
+	if (master)
+	{
+		// catchup with new master
+		peer_send_message(master, C_LASTSEEN, config->cluster_seq_number, NULL, 0);
+
+		// delay next election
+		config->cluster_last_hb = TIME;
+	}
+
+	// run election (or reset "probed" if master was set)
 	cluster_check_master();
 	return 0;
 }
@@ -1061,7 +1327,7 @@ static int cluster_set_master(in_addr_t peer, in_addr_t master)
 // Note that we don't mark the session as dirty; We rely on
 // the slow table walk to propogate this back out to the slaves.
 //
-static int cluster_handle_bytes(char *data, int size)
+static int cluster_handle_bytes(uint8_t *data, int size)
 {
 	bytest *b;
 
@@ -1078,14 +1344,19 @@ static int cluster_handle_bytes(char *data, int size)
 			return -1; /* Abort processing */
 		}
 
-		session[b->sid].total_cin += b->in;
-		session[b->sid].total_cout += b->out;
+		session[b->sid].pin += b->pin;
+		session[b->sid].pout += b->pout;
 
-		session[b->sid].cin += b->in;
-		session[b->sid].cout += b->out;
+		increment_counter(&session[b->sid].cin, &session[b->sid].cin_wrap, b->cin);
+		increment_counter(&session[b->sid].cout, &session[b->sid].cout_wrap, b->cout);
 
-		if (b->in)
-			session[b->sid].last_packet = time_now; // Reset idle timer!
+		session[b->sid].cin_delta += b->cin;
+		session[b->sid].cout_delta += b->cout;
+
+		if (b->cin)
+			session[b->sid].last_packet = session[b->sid].last_data = time_now;
+		else if (b->cout)
+			session[b->sid].last_data = time_now;
 
 		size -= sizeof(*b);
 		++b;
@@ -1125,6 +1396,56 @@ static int cluster_recv_session(int more, uint8_t *p)
 	return 0;
 }
 
+static int cluster_recv_bundle(int more, uint8_t *p)
+{
+	if (more >= MAXBUNDLE) {
+		LOG(0, 0, 0, "DANGER: Received a bundle id > MAXBUNDLE!\n");
+		return -1;
+	}
+
+	if (bundle[more].state == BUNDLEUNDEF) {
+		if (config->cluster_iam_uptodate) { // Sanity.
+			LOG(0, 0, 0, "I thought I was uptodate but I just found an undefined bundle!\n");
+		} else {
+			--config->cluster_undefined_bundles;
+		}
+	}
+
+	memcpy(&bundle[more], p, sizeof(bundle[more]) );
+
+	LOG(5, 0, more, "Received bundle update\n");
+
+	if (!config->cluster_iam_uptodate)
+		cluster_uptodate();     // Check to see if we're up to date.
+
+        return 0;
+}
+
+static int cluster_recv_groupe(int more, uint8_t *p)
+{
+	if (more >= MAXGROUPE) {
+		LOG(0, 0, 0, "DANGER: Received a group id > MAXGROUPE!\n");
+		return -1;
+	}
+
+	if (grpsession[more].state == GROUPEUNDEF) {
+		if (config->cluster_iam_uptodate) { // Sanity.
+			LOG(0, 0, 0, "I thought I was uptodate but I just found an undefined group!\n");
+		} else {
+			--config->cluster_undefined_groupes;
+		}
+	}
+
+	grp_cluster_load_groupe(more, (groupsesst *) p);	// Copy groupe into groupe table..
+
+	LOG(5, 0, more, "Received group update (%d undef)\n", config->cluster_undefined_groupes);
+
+	if (!config->cluster_iam_uptodate)
+		cluster_uptodate();     // Check to see if we're up to date.
+
+        return 0;
+}
+
 static int cluster_recv_tunnel(int more, uint8_t *p)
 {
 	if (more >= MAXTUNNEL) {
@@ -1158,51 +1479,62 @@ static int cluster_recv_tunnel(int more, uint8_t *p)
 }
 
 
-// pre v5 heartbeat session structure
+// pre v6 heartbeat session structure
 struct oldsession {
 	sessionidt next;
 	sessionidt far;
 	tunnelidt tunnel;
+	uint8_t flags;
+	struct {
+		uint8_t phase;
+		uint8_t lcp:4;
+		uint8_t ipcp:4;
+		uint8_t ipv6cp:4;
+		uint8_t ccp:4;
+	} ppp;
+	char reserved_1[2];
 	in_addr_t ip;
 	int ip_pool_index;
-	unsigned long unique_id;
-	uint16_t nr;
-	uint16_t ns;
+	uint32_t unique_id;
+	char reserved_2[4];
 	uint32_t magic;
-	uint32_t cin, cout;
 	uint32_t pin, pout;
-	uint32_t total_cin;
-	uint32_t total_cout;
-	uint32_t id;
+	uint32_t cin, cout;
+	uint32_t cin_wrap, cout_wrap;
+	uint32_t cin_delta, cout_delta;
 	uint16_t throttle_in;
 	uint16_t throttle_out;
+	uint8_t filter_in;
+	uint8_t filter_out;
+	uint16_t mru;
 	clockt opened;
 	clockt die;
+	uint32_t session_timeout;
+	uint32_t idle_timeout;
 	time_t last_packet;
+	time_t last_data;
 	in_addr_t dns1, dns2;
 	routet route[MAXROUTE];
-	uint16_t radius;
-	uint16_t mru;
 	uint16_t tbf_in;
 	uint16_t tbf_out;
-	uint8_t l2tp_flags;
-	uint8_t reserved_old_snoop;
-	uint8_t walled_garden;
-	uint8_t flags1;
-	char random_vector[MAXTEL];
 	int random_vector_length;
-	char user[129];
+	uint8_t random_vector[MAXTEL];
+	char user[MAXUSER];
 	char called[MAXTEL];
 	char calling[MAXTEL];
 	uint32_t tx_connect_speed;
 	uint32_t rx_connect_speed;
-	uint32_t flags;
+	clockt timeout;
+	uint32_t mrru;
+	uint8_t mssf;
+	epdist epdis;
+	bundleidt bundle;
 	in_addr_t snoop_ip;
 	uint16_t snoop_port;
-	uint16_t sid;
-	uint8_t filter_in;
-	uint8_t filter_out;
-	char reserved[18];
+	uint8_t walled_garden;
+	uint8_t ipv6prefixlen;
+	struct in6_addr ipv6route;
+	char reserved_3[11];
 };
 
 static uint8_t *convert_session(struct oldsession *old)
@@ -1215,20 +1547,24 @@ static uint8_t *convert_session(struct oldsession *old)
 	new.next = old->next;
 	new.far = old->far;
 	new.tunnel = old->tunnel;
-	new.l2tp_flags = old->l2tp_flags;
 	new.flags = old->flags;
+	new.ppp.phase = old->ppp.phase;
+	new.ppp.lcp = old->ppp.lcp;
+	new.ppp.ipcp = old->ppp.ipcp;
+	new.ppp.ipv6cp = old->ppp.ipv6cp;
+	new.ppp.ccp = old->ppp.ccp;
 	new.ip = old->ip;
 	new.ip_pool_index = old->ip_pool_index;
 	new.unique_id = old->unique_id;
-	new.nr = old->nr;
-	new.ns = old->ns;
 	new.magic = old->magic;
-	new.cin = old->cin;
-	new.cout = old->cout;
 	new.pin = old->pin;
 	new.pout = old->pout;
-	new.total_cin = old->total_cin;
-	new.total_cout = old->total_cout;
+	new.cin = old->cin;
+	new.cout = old->cout;
+	new.cin_wrap = old->cin_wrap;
+	new.cout_wrap = old->cout_wrap;
+	new.cin_delta = old->cin_delta;
+	new.cout_delta = old->cout_delta;
 	new.throttle_in = old->throttle_in;
 	new.throttle_out = old->throttle_out;
 	new.filter_in = old->filter_in;
@@ -1236,7 +1572,10 @@ static uint8_t *convert_session(struct oldsession *old)
 	new.mru = old->mru;
 	new.opened = old->opened;
 	new.die = old->die;
+	new.session_timeout = old->session_timeout;
+	new.idle_timeout = old->idle_timeout;
 	new.last_packet = old->last_packet;
+	new.last_data = old->last_data;
 	new.dns1 = old->dns1;
 	new.dns2 = old->dns2;
 	new.tbf_in = old->tbf_in;
@@ -1244,9 +1583,16 @@ static uint8_t *convert_session(struct oldsession *old)
 	new.random_vector_length = old->random_vector_length;
 	new.tx_connect_speed = old->tx_connect_speed;
 	new.rx_connect_speed = old->rx_connect_speed;
+	new.timeout = old->timeout;
+	new.mrru = old->mrru;
+	new.mssf = old->mssf;
+	new.epdis = old->epdis;
+	new.bundle = old->bundle;
 	new.snoop_ip = old->snoop_ip;
 	new.snoop_port = old->snoop_port;
 	new.walled_garden = old->walled_garden;
+	new.ipv6prefixlen = old->ipv6prefixlen;
+	new.ipv6route = old->ipv6route;
 
 	memcpy(new.random_vector, old->random_vector, sizeof(new.random_vector));
 	memcpy(new.user, old->user, sizeof(new.user));
@@ -1262,9 +1608,8 @@ static uint8_t *convert_session(struct oldsession *old)
 //
 // Process a heartbeat..
 //
-// v3: added interval, timeout
-// v4: added table_version
-// v5: added ipv6, re-ordered session structure
+// v6: added RADIUS class attribute, re-ordered session structure
+// v7: added tunnelt attribute at the end of struct (tunnelt size change)
 static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t *p, in_addr_t addr)
 {
 	heartt *h;
@@ -1272,17 +1617,21 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 	int i, type;
 	int hb_ver = more;
 
-#if HB_VERSION != 5
+#if HB_VERSION != 7
 # error "need to update cluster_process_heartbeat()"
 #endif
 
-	// we handle versions 3 through 5
-	if (hb_ver < 3 || hb_ver > HB_VERSION) {
+	// we handle versions 5 through 7
+	if (hb_ver < 5 || hb_ver > HB_VERSION) {
 		LOG(0, 0, 0, "Received a heartbeat version that I don't support (%d)!\n", hb_ver);
 		return -1; // Ignore it??
 	}
 
-		// Ok. It's a heartbeat packet from a cluster master!
+	if (size > sizeof(past_hearts[0].data)) {
+		LOG(0, 0, 0, "Received an oversize heartbeat from %s (%d)!\n", fmtaddr(addr, 0), size);
+		return -1;
+	}
+
 	if (s < sizeof(*h))
 		goto shortpacket;
 
@@ -1302,18 +1651,17 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 			return -1; // Skip it.
 		}
 
-		if (hb_ver >= 4) {
-			if (h->table_version > config->cluster_table_version) {
-				LOG(0, 0, 0, "They've seen more state changes (%" PRIu64 " vs my %" PRIu64 ") so I'm gone!\n",
+		if (h->table_version > config->cluster_table_version) {
+			LOG(0, 0, 0, "They've seen more state changes (%" PRIu64 " vs my %" PRIu64 ") so I'm gone!\n",
 					h->table_version, config->cluster_table_version);
 
-				kill(0, SIGTERM);
-				exit(1);
-			}
-			if (h->table_version < config->cluster_table_version)
-			    	return -1;
+			kill(0, SIGTERM);
+			exit(1);
 		}
 
+		if (h->table_version < config->cluster_table_version)
+			return -1;
+
 		if (basetime > h->basetime) {
 			LOG(0, 0, 0, "They're an older master than me so I'm gone!\n");
 			kill(0, SIGTERM);
@@ -1348,8 +1696,7 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 		// Note that after a clean failover, the cluster_master_address
 		// is cleared, so this doesn't run. 
 		//
-	if (config->cluster_master_address && addr != config->cluster_master_address
-	    && (config->cluster_last_hb + config->cluster_hb_timeout - 11) > TIME) {
+	if (config->cluster_master_address && addr != config->cluster_master_address) {
 		    LOG(0, 0, 0, "Ignoring stray heartbeat from %s, current master %s has not yet timed out (last heartbeat %.1f seconds ago).\n",
 			    fmtaddr(addr, 0), fmtaddr(config->cluster_master_address, 1),
 			    0.1 * (TIME - config->cluster_last_hb));
@@ -1360,6 +1707,7 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 		config->cluster_seq_number = h->seq;
 
 	config->cluster_last_hb = TIME;	// Reset to ensure that we don't become master!!
+	config->cluster_last_hb_ver = hb_ver; // remember what cluster version the master is using
 
 	if (config->cluster_seq_number != h->seq) {	// Out of sequence heartbeat!
 		static int lastseen_seq = 0;
@@ -1394,9 +1742,10 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 	memcpy(&past_hearts[i].data, data, size);	// Save it.
 
 
-			// Check that we don't have too many undefined sessions, and
-			// that the free session pointer is correct.
-	cluster_check_sessions(h->highsession, h->freesession, h->hightunnel);
+	// Check that we don't have too many undefined sessions, and
+	// that the free session pointer is correct.
+	gnextgrpid = h->nextgrpid;
+	cluster_check_sessions(h->highsession, h->freesession, h->highbundle, h->hightunnel, h->highgroupe);
 
 	if (h->interval != config->cluster_hb_interval)
 	{
@@ -1435,7 +1784,7 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 				s -= (p - orig_p);
 
 				// session struct changed with v5
-				if (hb_ver < 5)
+				if (hb_ver < 6)
 				{
 					if (size != sizeof(struct oldsession)) {
 						LOG(0, 0, 0, "DANGER: Received a v%d CSESSION that didn't decompress correctly!\n", hb_ver);
@@ -1456,7 +1805,7 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 				break;
 			}
 			case C_SESSION:
-			    	if (hb_ver < 5)
+				if (hb_ver < 6)
 				{
 					if (s < sizeof(struct oldsession))
 						goto shortpacket;
@@ -1485,8 +1834,10 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 				size = rle_decompress((uint8_t **) &p, s, c, sizeof(c));
 				s -= (p - orig_p);
 
-				if (size != sizeof(tunnelt) ) { // Ouch! Very very bad!
-					LOG(0, 0, 0, "DANGER: Received a CSESSION that didn't decompress correctly!\n");
+				if ( ((hb_ver >= HB_VERSION) && (size != sizeof(tunnelt))) ||
+					 ((hb_ver < HB_VERSION) && (size > sizeof(tunnelt))) )
+				{ // Ouch! Very very bad!
+					LOG(0, 0, 0, "DANGER: Received a CTUNNEL that didn't decompress correctly!\n");
 						// Now what? Should exit! No-longer up to date!
 					break;
 				}
@@ -1504,6 +1855,64 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
 				p += sizeof(tunnel[more]);
 				s -= sizeof(tunnel[more]);
 				break;
+
+			case C_CBUNDLE: { // Compressed bundle structure.
+				uint8_t c[ sizeof(bundlet) + 2];
+				int size;
+				uint8_t *orig_p = p;
+
+				size = rle_decompress((uint8_t **) &p, s, c, sizeof(c));
+				s -= (p - orig_p);
+
+				if (size != sizeof(bundlet) ) { // Ouch! Very very bad!
+					LOG(0, 0, 0, "DANGER: Received a CBUNDLE that didn't decompress correctly!\n");
+						// Now what? Should exit! No-longer up to date!
+					break;
+				}
+
+				cluster_recv_bundle(more, c);
+				break;
+
+			}
+			case C_BUNDLE:
+				if ( s < sizeof(bundle[more]))
+                                        goto shortpacket;
+
+                                cluster_recv_bundle(more, p);
+
+                                p += sizeof(bundle[more]);
+                                s -= sizeof(bundle[more]);
+                                break;
+
+			case C_CGROUPE:
+			{ // Compressed Groupe structure.
+				uint8_t c[ sizeof(groupsesst) + 2];
+				int size;
+				uint8_t *orig_p = p;
+
+				size = rle_decompress((uint8_t **) &p, s, c, sizeof(c));
+				s -= (p - orig_p);
+
+				if (size != sizeof(groupsesst) )
+				{ // Ouch! Very very bad!
+					LOG(0, 0, 0, "DANGER: Received a C_CGROUPE that didn't decompress correctly!\n");
+					// Now what? Should exit! No-longer up to date!
+					break;
+				}
+
+				cluster_recv_groupe(more, c);
+				break;
+			}
+			case C_GROUPE:
+				if ( s < sizeof(grpsession[more]))
+					goto shortpacket;
+
+				cluster_recv_groupe(more, p);
+
+				p += sizeof(grpsession[more]);
+				s -= sizeof(grpsession[more]);
+			break;
+
 			default:
 				LOG(0, 0, 0, "DANGER: I received a heartbeat element where I didn't understand the type! (%d)\n", type);
 				return -1; // can't process any more of the packet!!
@@ -1531,10 +1940,10 @@ shortpacket:
 // We got a packet on the cluster port!
 // Handle pings, lastseens, and heartbeats!
 //
-int processcluster(char *data, int size, in_addr_t addr)
+int processcluster(uint8_t *data, int size, in_addr_t addr)
 {
 	int type, more;
-	char *p = data;
+	uint8_t *p = data;
 	int s = size;
 
 	if (addr == my_address)
@@ -1556,7 +1965,8 @@ int processcluster(char *data, int size, in_addr_t addr)
 	p += sizeof(uint32_t);
 	s -= sizeof(uint32_t);
 
-	switch (type) {
+	switch (type)
+	{
 	case C_PING: // Update the peers table.
 		return cluster_add_peer(addr, more, (pingt *) p, s);
 
@@ -1566,24 +1976,63 @@ int processcluster(char *data, int size, in_addr_t addr)
 	case C_LASTSEEN: // Catch up a slave (slave missed a packet).
 		return cluster_catchup_slave(more, addr);
 
-	case C_FORWARD: { // Forwarded control packet. pass off to processudp.
-		struct sockaddr_in a;
-		a.sin_addr.s_addr = more;
+	case C_FORWARD: // Forwarded control packet. pass off to processudp.
+	case C_FORWARD_DAE: // Forwarded DAE packet. pass off to processdae.
+		if (!config->cluster_iam_master)
+		{
+			LOG(0, 0, 0, "I'm not the master, but I got a C_FORWARD%s from %s?\n",
+				type == C_FORWARD_DAE ? "_DAE" : "", fmtaddr(addr, 0));
 
-		a.sin_port = *(int *) p;
-		s -= sizeof(int);
-		p += sizeof(int);
+			return -1;
+		}
+		else
+		{
+			struct sockaddr_in a;
+			uint16_t indexudp;
+			a.sin_addr.s_addr = more;
+
+			a.sin_port = (*(int *) p) & 0xFFFF;
+			indexudp = ((*(int *) p) >> 16) & 0xFFFF;
+			s -= sizeof(int);
+			p += sizeof(int);
+
+			LOG(4, 0, 0, "Got a forwarded %spacket... (%s:%d)\n",
+				type == C_FORWARD_DAE ? "DAE " : "", fmtaddr(more, 0), a.sin_port);
+
+			STAT(recv_forward);
+			if (type == C_FORWARD_DAE)
+			{
+				struct in_addr local;
+				local.s_addr = config->bind_address ? config->bind_address : my_address;
+				processdae(p, s, &a, sizeof(a), &local);
+			}
+			else
+				processudp(p, s, &a, indexudp);
+
+			return 0;
+		}
+	case C_PPPOE_FORWARD:
+		if (!config->cluster_iam_master)
+		{
+			LOG(0, 0, 0, "I'm not the master, but I got a C_PPPOE_FORWARD from %s?\n", fmtaddr(addr, 0));
+			return -1;
+		}
+		else
+		{
+			pppoe_process_forward(p, s, addr);
+			return 0;
+		}
 
-		if (!config->cluster_iam_master) { // huh?
-			LOG(0, 0, 0, "I'm not the master, but I got a C_FORWARD from %s?\n", fmtaddr(addr, 0));
+	case C_MPPP_FORWARD:
+		// Receive a MPPP packet from a slave.
+		if (!config->cluster_iam_master) {
+			LOG(0, 0, 0, "I'm not the master, but I got a C_MPPP_FORWARD from %s?\n", fmtaddr(addr, 0));
 			return -1;
 		}
 
-		LOG(4, 0, 0, "Got a forwarded packet... (%s:%d)\n", fmtaddr(more, 0), a.sin_port);
-		STAT(recv_forward);
-		processudp(p, s, &a);
+		processipout(p, s);
 		return 0;
-	}
+
 	case C_THROTTLE: {	// Receive a forwarded packet from a slave.
 		if (!config->cluster_iam_master) {
 			LOG(0, 0, 0, "I'm not the master, but I got a C_THROTTLE from %s?\n", fmtaddr(addr, 0));
@@ -1672,11 +2121,15 @@ int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc)
 		cli_print(cli, "Table version #  : %" PRIu64, config->cluster_table_version);
 		cli_print(cli, "Next sequence number expected: %d", config->cluster_seq_number);
 		cli_print(cli, "%d sessions undefined of %d", config->cluster_undefined_sessions, config->cluster_highest_sessionid);
+		cli_print(cli, "%d bundles undefined of %d", config->cluster_undefined_bundles, config->cluster_highest_bundleid);
+		cli_print(cli, "%d groupes undefined of %d", config->cluster_undefined_groupes, config->cluster_highest_groupeid);
 		cli_print(cli, "%d tunnels undefined of %d", config->cluster_undefined_tunnels, config->cluster_highest_tunnelid);
 	} else {
 		cli_print(cli, "Table version #  : %" PRIu64, config->cluster_table_version);
 		cli_print(cli, "Next heartbeat # : %d", config->cluster_seq_number);
 		cli_print(cli, "Highest session  : %d", config->cluster_highest_sessionid);
+		cli_print(cli, "Highest bundle   : %d", config->cluster_highest_bundleid);
+		cli_print(cli, "Highest groupe   : %d", config->cluster_highest_groupeid);
 		cli_print(cli, "Highest tunnel   : %d", config->cluster_highest_tunnelid);
 		cli_print(cli, "%d changes queued for sending", config->cluster_num_changes);
 	}
@@ -1760,7 +2213,7 @@ static int rle_decompress(uint8_t **src_p, int ssize, uint8_t *dst, int dsize)
 {
 	int count;
 	int orig_dsize = dsize;
-	char *src = *src_p;
+	uint8_t *src = *src_p;
 
 	while (ssize >0 && dsize > 0) {	// While there's more to decompress, and there's room in the decompress buffer...
 		count = *src++; --ssize;  // get the count byte from the source.