diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 7e8e34c..1aa1a58 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -121,6 +121,7 @@ extern int sctp_copy_local_addr_list(struct sctp_bind_addr *,
 				     int flags);
 extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family);
 extern int sctp_register_pf(struct sctp_pf *, sa_family_t);
+void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *, int);
 
 /*
  * sctp/socket.c
@@ -135,6 +136,7 @@ void sctp_sock_rfree(struct sk_buff *skb);
 void sctp_copy_sock(struct sock *newsk, struct sock *sk,
 		    struct sctp_association *asoc);
 extern struct percpu_counter sctp_sockets_allocated;
+int sctp_asconf_mgmt(struct sctp_sock *, struct sctp_sockaddr_entry *);
 
 /*
  * sctp/primitive.c
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 5c9bada..f7f6add 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -205,6 +205,11 @@ extern struct sctp_globals {
 	 * It is a list of sctp_sockaddr_entry.
 	 */
 	struct list_head local_addr_list;
+	int default_auto_asconf;
+	struct list_head addr_waitq;
+	struct timer_list addr_wq_timer;
+	struct list_head auto_asconf_splist;
+	spinlock_t addr_wq_lock;
 
 	/* Lock that protects the local_addr_list writers */
 	spinlock_t addr_list_lock;
@@ -264,6 +269,11 @@ extern struct sctp_globals {
 #define sctp_port_hashtable		(sctp_globals.port_hashtable)
 #define sctp_local_addr_list		(sctp_globals.local_addr_list)
 #define sctp_local_addr_lock		(sctp_globals.addr_list_lock)
+#define sctp_auto_asconf_splist		(sctp_globals.auto_asconf_splist)
+#define sctp_addr_waitq			(sctp_globals.addr_waitq)
+#define sctp_addr_wq_timer		(sctp_globals.addr_wq_timer)
+#define sctp_addr_wq_lock		(sctp_globals.addr_wq_lock)
+#define sctp_default_auto_asconf	(sctp_globals.default_auto_asconf)
 #define sctp_scope_policy		(sctp_globals.ipv4_scope_policy)
 #define sctp_addip_enable		(sctp_globals.addip_enable)
 #define sctp_addip_noauth		(sctp_globals.addip_noauth_enable)
@@ -341,6 +351,8 @@ struct sctp_sock {
 	atomic_t pd_mode;
 	/* Receive to here while partial delivery is in effect. */
 	struct sk_buff_head pd_lobby;
+	struct list_head auto_asconf_list;
+	int do_auto_asconf;
 };
 
 static inline struct sctp_sock *sctp_sk(const struct sock *sk)
@@ -796,6 +808,8 @@ struct sctp_sockaddr_entry {
 	__u8 valid;
 };
 
+#define SCTP_ADDRESS_TICK_DELAY	500
+
 typedef struct sctp_chunk *(sctp_packet_phandler_t)(struct sctp_association *);
 
 /* This structure holds lists of chunks as we are assembling for
@@ -1239,6 +1253,7 @@ sctp_scope_t sctp_scope(const union sctp_addr *);
 int sctp_in_scope(const union sctp_addr *addr, const sctp_scope_t scope);
 int sctp_is_any(struct sock *sk, const union sctp_addr *addr);
 int sctp_addr_is_valid(const union sctp_addr *addr);
+int sctp_is_ep_boundall(struct sock *sk);
 
 
 /* What type of endpoint?  */
diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index faf71d1..869267b 100644
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -536,6 +536,21 @@ int sctp_in_scope(const union sctp_addr *addr, sctp_scope_t scope)
 	return 0;
 }
 
+int sctp_is_ep_boundall(struct sock *sk)
+{
+	struct sctp_bind_addr *bp;
+	struct sctp_sockaddr_entry *addr;
+
+	bp = &sctp_sk(sk)->ep->base.bind_addr;
+	if (sctp_list_single_entry(&bp->address_list)) {
+		addr = list_entry(bp->address_list.next,
+				  struct sctp_sockaddr_entry, list);
+		if (sctp_is_any(sk, &addr->a))
+			return 1;
+	}
+	return 0;
+}
+
 /********************************************************************
  * 3rd Level Abstractions
  ********************************************************************/
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 321f175..233eb3a 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -105,6 +105,7 @@ static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
 			addr->valid = 1;
 			spin_lock_bh(&sctp_local_addr_lock);
 			list_add_tail_rcu(&addr->list, &sctp_local_addr_list);
+			sctp_addr_wq_mgmt(addr, SCTP_ADDR_NEW);
 			spin_unlock_bh(&sctp_local_addr_lock);
 		}
 		break;
@@ -115,6 +116,7 @@ static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
 			if (addr->a.sa.sa_family == AF_INET6 &&
 					ipv6_addr_equal(&addr->a.v6.sin6_addr,
 						&ifa->addr)) {
+				sctp_addr_wq_mgmt(addr, SCTP_ADDR_DEL);
 				found = 1;
 				addr->valid = 0;
 				list_del_rcu(&addr->list);
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index d5bf91d..6a08d63 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -636,6 +636,160 @@ static void sctp_v4_ecn_capable(struct sock *sk)
 	INET_ECN_xmit(sk);
 }
 
+void sctp_addr_wq_timeout_handler(unsigned long arg)
+{
+	struct sctp_sockaddr_entry *addrw = NULL;
+	union sctp_addr *addr = NULL;
+	struct sctp_sock *sp = NULL;
+
+	spin_lock_bh(&sctp_addr_wq_lock);
+retry_wq:
+	if (list_empty(&sctp_addr_waitq)) {
+		SCTP_DEBUG_PRINTK("sctp_addrwq_timo_handler: nothing in addr waitq\n");
+		spin_unlock_bh(&sctp_addr_wq_lock);
+		return;
+	}
+	addrw = list_first_entry(&sctp_addr_waitq, struct sctp_sockaddr_entry,
+			list);
+	addr = &addrw->a;
+	SCTP_DEBUG_PRINTK_IPADDR("sctp_addrwq_timo_handler: the first ent in wq %p is ",
+	    " for cmd %d at entry %p\n", &sctp_addr_waitq, addr, addrw->state,
+	    addrw);
+
+	/* Now we send an ASCONF for each association */
+	/* Note. we currently don't handle link local IPv6 addressees */
+	if (addr->sa.sa_family == AF_INET6) {
+		struct in6_addr *in6 = (struct in6_addr *)&addr->v6.sin6_addr;
+
+		if (ipv6_addr_type(&addr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) {
+			SCTP_DEBUG_PRINTK("sctp_timo_handler: link local, hence don't tell sockets\n");
+			list_del(&addrw->list);
+			kfree(addrw);
+			goto retry_wq;
+		}
+		if (ipv6_chk_addr(&init_net, in6, NULL, 0) == 0 &&
+		    addrw->state == SCTP_ADDR_NEW) {
+			unsigned long timeo_val;
+
+			SCTP_DEBUG_PRINTK("sctp_timo_handler: this is on DAD, trying %d sec later\n",
+			    SCTP_ADDRESS_TICK_DELAY);
+			timeo_val = jiffies;
+			timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY);
+			mod_timer(&sctp_addr_wq_timer, timeo_val);
+			spin_unlock_bh(&sctp_addr_wq_lock);
+			return;
+		}
+	}
+	list_for_each_entry(sp, &sctp_auto_asconf_splist, auto_asconf_list) {
+		struct sock *sk;
+
+		sk = sctp_opt2sk(sp);
+		/* ignore bound-specific endpoints */
+		if (!sctp_is_ep_boundall(sk))
+			continue;
+		sctp_bh_lock_sock(sk);
+		if (sctp_asconf_mgmt(sp, addrw) < 0) {
+			SCTP_DEBUG_PRINTK("sctp_addrwq_timo_handler: sctp_asconf_mgmt failed\n");
+			sctp_bh_unlock_sock(sk);
+			continue;
+		}
+		sctp_bh_unlock_sock(sk);
+	}
+
+	list_del(&addrw->list);
+	kfree(addrw);
+
+	if (!list_empty(&sctp_addr_waitq))
+		goto retry_wq;
+
+	spin_unlock_bh(&sctp_addr_wq_lock);
+}
+
+static void sctp_free_addr_wq()
+{
+	struct sctp_sockaddr_entry *addrw = NULL;
+	struct sctp_sockaddr_entry *temp = NULL;
+
+	spin_lock_bh(&sctp_addr_wq_lock);
+	del_timer(&sctp_addr_wq_timer);
+	list_for_each_entry_safe(addrw, temp, &sctp_addr_waitq, list) {
+		list_del(&addrw->list);
+		kfree(addrw);
+	}
+	spin_unlock_bh(&sctp_addr_wq_lock);
+}
+
+/* lookup the entry for the same address in the addr_waitq
+ * sctp_addr_wq MUST be locked
+ */
+static struct sctp_sockaddr_entry *sctp_addr_wq_lookup(struct sctp_sockaddr_entry *addr)
+{
+	struct sctp_sockaddr_entry *addrw;
+
+	list_for_each_entry(addrw, &sctp_addr_waitq, list) {
+		if (addrw->a.sa.sa_family != addr->a.sa.sa_family)
+			continue;
+		if (addrw->a.sa.sa_family == AF_INET) {
+			if (addrw->a.v4.sin_addr.s_addr ==
+			    addr->a.v4.sin_addr.s_addr)
+				return addrw;
+		} else if (addrw->a.sa.sa_family == AF_INET6) {
+			if (ipv6_addr_equal(&addrw->a.v6.sin6_addr,
+			    &addr->a.v6.sin6_addr))
+				return addrw;
+		}
+	}
+	return NULL;
+}
+
+void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *addr, int cmd)
+{
+	struct sctp_sockaddr_entry *addrw = NULL;
+	unsigned long timeo_val;
+	union sctp_addr *tmpaddr;
+
+	/* first, we check if an opposite message already exist in the queue.
+	 * If we found such message, it is removed.
+	 * This operation is a bit stupid, but the DHCP client attaches the
+	 * new address after a couple of addition and deletion of that address
+	 */
+
+	spin_lock_bh(&sctp_addr_wq_lock);
+	/* Offsets existing events in addr_wq */
+	addrw = sctp_addr_wq_lookup(addr);
+	tmpaddr = &addrw->a;
+	if (addrw) {
+		if (addrw->state != cmd) {
+			SCTP_DEBUG_PRINTK_IPADDR("sctp_addr_wq_mgmt offsets existing entry for %d ",
+			    " in wq %p\n", addrw->state, tmpaddr,
+			    &sctp_addr_waitq);
+			list_del(&addrw->list);
+			kfree(addrw);
+		}
+		spin_unlock_bh(&sctp_addr_wq_lock);
+		return;
+	}
+
+	/* OK, we have to add the new address to the wait queue */
+	addrw = kmemdup(addr, sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
+	if (addrw == NULL) {
+		spin_unlock_bh(&sctp_addr_wq_lock);
+		return;
+	}
+	addrw->state = cmd;
+	list_add_tail(&addrw->list, &sctp_addr_waitq);
+	tmpaddr = &addrw->a;
+	SCTP_DEBUG_PRINTK_IPADDR("sctp_addr_wq_mgmt add new entry for cmd:%d ",
+	    " in wq %p\n", addrw->state, tmpaddr, &sctp_addr_waitq);
+
+	if (!timer_pending(&sctp_addr_wq_timer)) {
+		timeo_val = jiffies;
+		timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY);
+		mod_timer(&sctp_addr_wq_timer, timeo_val);
+	}
+	spin_unlock_bh(&sctp_addr_wq_lock);
+}
+
 /* Event handler for inet address addition/deletion events.
  * The sctp_local_addr_list needs to be protocted by a spin lock since
  * multiple notifiers (say IPv4 and IPv6) may be running at the same
@@ -663,6 +817,7 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
 			addr->valid = 1;
 			spin_lock_bh(&sctp_local_addr_lock);
 			list_add_tail_rcu(&addr->list, &sctp_local_addr_list);
+			sctp_addr_wq_mgmt(addr, SCTP_ADDR_NEW);
 			spin_unlock_bh(&sctp_local_addr_lock);
 		}
 		break;
@@ -673,6 +828,7 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
 			if (addr->a.sa.sa_family == AF_INET &&
 					addr->a.v4.sin_addr.s_addr ==
 					ifa->ifa_local) {
+				sctp_addr_wq_mgmt(addr, SCTP_ADDR_DEL);
 				found = 1;
 				addr->valid = 0;
 				list_del_rcu(&addr->list);
@@ -1256,6 +1412,7 @@ SCTP_STATIC __init int sctp_init(void)
 	/* Disable ADDIP by default. */
 	sctp_addip_enable = 0;
 	sctp_addip_noauth = 0;
+	sctp_default_auto_asconf = 0;
 
 	/* Enable PR-SCTP by default. */
 	sctp_prsctp_enable = 1;
@@ -1280,6 +1437,13 @@ SCTP_STATIC __init int sctp_init(void)
 	spin_lock_init(&sctp_local_addr_lock);
 	sctp_get_local_addr_list();
 
+	/* Initialize the address event list */
+	INIT_LIST_HEAD(&sctp_addr_waitq);
+	INIT_LIST_HEAD(&sctp_auto_asconf_splist);
+	spin_lock_init(&sctp_addr_wq_lock);
+	sctp_addr_wq_timer.expires = 0;
+	setup_timer(&sctp_addr_wq_timer, sctp_addr_wq_timeout_handler, 0);
+
 	status = sctp_v4_protosw_init();
 
 	if (status)
@@ -1351,6 +1515,7 @@ SCTP_STATIC __exit void sctp_exit(void)
 	/* Unregister with inet6/inet layers. */
 	sctp_v6_del_protocol();
 	sctp_v4_del_protocol();
+	sctp_free_addr_wq();
 
 	/* Free the control endpoint.  */
 	inet_ctl_sock_destroy(sctp_ctl_sock);
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index f694ee1..fb183c5 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -811,6 +811,37 @@ out:
 	return retval;
 }
 
+/* set addr events to assocs in the endpoint.  ep and addr_wq must be locked */
+int
+sctp_asconf_mgmt(struct sctp_sock *sp, struct sctp_sockaddr_entry *addrw)
+{
+	struct sock *sk = sctp_opt2sk(sp);
+	union sctp_addr *addr = NULL;
+	int cmd;
+	int error = 0;
+
+	addr = &addrw->a;
+	addr->v4.sin_port = htons(sp->ep->base.bind_addr.port);
+	cmd = addrw->state;
+
+	SCTP_DEBUG_PRINTK("sctp_asconf_mgmt sp:%p\n", sp);
+	if (cmd == SCTP_ADDR_NEW) {
+		error = sctp_send_asconf_add_ip(sk, (struct sockaddr *)addr, 1);
+		if (error) {
+			SCTP_DEBUG_PRINTK("asconf_mgmt: send_asconf_add_ip returns %d\n", error);
+			return error;
+		}
+	} else if (cmd == SCTP_ADDR_DEL) {
+		error = sctp_send_asconf_del_ip(sk, (struct sockaddr *)addr, 1);
+		if (error) {
+			SCTP_DEBUG_PRINTK("asconf_mgmt: send_asconf_del_ip returns %d\n", error);
+			return error;
+		}
+	}
+
+	return 0;
+}
+
 /* Helper for tunneling sctp_bindx() requests through sctp_setsockopt()
  *
  * API 8.1
@@ -3764,6 +3795,13 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 	local_bh_disable();
 	percpu_counter_inc(&sctp_sockets_allocated);
 	sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+	if (sctp_default_auto_asconf) {
+		list_add_tail(&sp->auto_asconf_list,
+		    &sctp_auto_asconf_splist);
+		sp->do_auto_asconf = 1;
+	} else
+		sp->do_auto_asconf = 0;
+	SCTP_DEBUG_PRINTK("sctp_init_sk sk:%p ep:%p\n", sk, ep);
 	local_bh_enable();
 
 	return 0;
@@ -3773,11 +3811,17 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
 SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
 {
 	struct sctp_endpoint *ep;
+	struct sctp_sock *sp;
 
 	SCTP_DEBUG_PRINTK("sctp_destroy_sock(sk: %p)\n", sk);
 
 	/* Release our hold on the endpoint. */
-	ep = sctp_sk(sk)->ep;
+	sp = sctp_sk(sk);
+	ep = sp->ep;
+	if (sp->do_auto_asconf) {
+		sp->do_auto_asconf = 0;
+		list_del(&sp->auto_asconf_list);
+	}
 	sctp_endpoint_free(ep);
 	local_bh_disable();
 	percpu_counter_dec(&sctp_sockets_allocated);
