diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 48ff7ce20890..77a0e859076c 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -420,7 +420,7 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
 	 */
 	mptcp_local_address((struct sock_common *)msk, &msk_local);
 	mptcp_local_address((struct sock_common *)skc, &skc_local);
-	if (mptcp_addresses_equal(&msk_local, &skc_local, false))
+	if (mptcp_addresses_equal(&msk_local, &skc_local, false, false))
 		return 0;
 
 	if (mptcp_pm_is_userspace(msk))
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 6bc1a6b5b4f0..6ad8bb2f32e9 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -47,7 +47,8 @@ pm_nl_get_pernet_from_msk(const struct mptcp_sock *msk)
 EXPORT_SYMBOL_GPL(pm_nl_get_pernet_from_msk);
 
 bool mptcp_addresses_equal(const struct mptcp_addr_info *a,
-			   const struct mptcp_addr_info *b, bool use_port)
+			   const struct mptcp_addr_info *b,
+			   bool use_port, bool use_id)
 {
 	bool addr_equals = false;
 
@@ -68,10 +69,14 @@ bool mptcp_addresses_equal(const struct mptcp_addr_info *a,
 
 	if (!addr_equals)
 		return false;
-	if (!use_port)
+	if (!use_port && !use_id)
 		return true;
 
-	return a->port == b->port;
+	if (use_port && use_id)
+		return (a->port == b->port) && (a->id == b->id);
+	if (use_port)
+		return a->port == b->port;
+	return a->id == b->id;
 }
 
 void mptcp_local_address(const struct sock_common *skc, struct mptcp_addr_info *addr)
@@ -110,7 +115,7 @@ static bool lookup_subflow_by_saddr(const struct list_head *list,
 		skc = (struct sock_common *)mptcp_subflow_tcp_sock(subflow);
 
 		mptcp_local_address(skc, &cur);
-		if (mptcp_addresses_equal(&cur, saddr, saddr->port))
+		if (mptcp_addresses_equal(&cur, saddr, saddr->port, false))
 			return true;
 	}
 
@@ -128,7 +133,7 @@ static bool lookup_subflow_by_daddr(const struct list_head *list,
 		skc = (struct sock_common *)mptcp_subflow_tcp_sock(subflow);
 
 		remote_address(skc, &cur);
-		if (mptcp_addresses_equal(&cur, daddr, daddr->port))
+		if (mptcp_addresses_equal(&cur, daddr, daddr->port, false))
 			return true;
 	}
 
@@ -205,7 +210,7 @@ mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock *msk,
 	lockdep_assert_held(&msk->pm.lock);
 
 	list_for_each_entry(entry, &msk->pm.anno_list, list) {
-		if (mptcp_addresses_equal(&entry->addr, addr, true))
+		if (mptcp_addresses_equal(&entry->addr, addr, true, false))
 			return entry;
 	}
 
@@ -222,7 +227,7 @@ bool mptcp_pm_sport_in_anno_list(struct mptcp_sock *msk, const struct sock *sk)
 
 	spin_lock_bh(&msk->pm.lock);
 	list_for_each_entry(entry, &msk->pm.anno_list, list) {
-		if (mptcp_addresses_equal(&entry->addr, &saddr, true)) {
+		if (mptcp_addresses_equal(&entry->addr, &saddr, true, false)) {
 			ret = true;
 			goto out;
 		}
@@ -463,7 +468,7 @@ __lookup_addr(struct pm_nl_pernet *pernet, const struct mptcp_addr_info *info)
 	struct mptcp_pm_addr_entry *entry;
 
 	list_for_each_entry(entry, &pernet->local_addr_list, list) {
-		if (mptcp_addresses_equal(&entry->addr, info, entry->addr.port))
+		if (mptcp_addresses_equal(&entry->addr, info, entry->addr.port, false))
 			return entry;
 	}
 	return NULL;
@@ -704,12 +709,12 @@ int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
 		struct mptcp_addr_info local, remote;
 
 		mptcp_local_address((struct sock_common *)ssk, &local);
-		if (!mptcp_addresses_equal(&local, addr, addr->port))
+		if (!mptcp_addresses_equal(&local, addr, addr->port, false))
 			continue;
 
 		if (rem && rem->family != AF_UNSPEC) {
 			remote_address((struct sock_common *)ssk, &remote);
-			if (!mptcp_addresses_equal(&remote, rem, rem->port))
+			if (!mptcp_addresses_equal(&remote, rem, rem->port, false))
 				continue;
 		}
 
@@ -884,7 +889,8 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet,
 		entry->addr.port = 0;
 	list_for_each_entry(cur, &pernet->local_addr_list, list) {
 		if (mptcp_addresses_equal(&cur->addr, &entry->addr,
-					  cur->addr.port || entry->addr.port)) {
+					  cur->addr.port || entry->addr.port,
+					  false)) {
 			/* allow replacing the exiting endpoint only if such
 			 * endpoint is an implicit one and the user-space
 			 * did not provide an endpoint id
@@ -1022,7 +1028,7 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
-		if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
+		if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port, false)) {
 			ret = entry->addr.id;
 			break;
 		}
@@ -1404,7 +1410,7 @@ static int mptcp_nl_remove_id_zero_address(struct net *net,
 			goto next;
 
 		mptcp_local_address((struct sock_common *)msk, &msk_local);
-		if (!mptcp_addresses_equal(&msk_local, addr, addr->port))
+		if (!mptcp_addresses_equal(&msk_local, addr, addr->port, false))
 			goto next;
 
 		lock_sock(sk);
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index 8494d6df866a..06fe6c65b4f9 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -54,7 +54,7 @@ static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk,
 
 	spin_lock_bh(&msk->pm.lock);
 	list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) {
-		addr_match = mptcp_addresses_equal(&e->addr, &entry->addr, true);
+		addr_match = mptcp_addresses_equal(&e->addr, &entry->addr, true, false);
 		if (addr_match && entry->addr.id == 0 && !set_id)
 			entry->addr.id = e->addr.id;
 		id_match = (e->addr.id == entry->addr.id);
@@ -105,7 +105,7 @@ static int mptcp_userspace_pm_delete_local_addr(struct mptcp_sock *msk,
 	struct mptcp_pm_addr_entry *entry, *tmp;
 
 	list_for_each_entry_safe(entry, tmp, &msk->pm.userspace_pm_local_addr_list, list) {
-		if (mptcp_addresses_equal(&entry->addr, &addr->addr, false)) {
+		if (mptcp_addresses_equal(&entry->addr, &addr->addr, false, false)) {
 			/* TODO: a refcount is needed because the entry can
 			 * be used multiple times (e.g. fullmesh mode).
 			 */
@@ -145,7 +145,7 @@ int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk,
 
 	spin_lock_bh(&msk->pm.lock);
 	list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) {
-		if (mptcp_addresses_equal(&e->addr, skc, false)) {
+		if (mptcp_addresses_equal(&e->addr, skc, false, false)) {
 			entry = e;
 			break;
 		}
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 7441e3b9443d..d132a8d91d10 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -645,7 +645,8 @@ void __mptcp_unaccepted_force_close(struct sock *sk);
 void mptcp_set_owner_r(struct sk_buff *skb, struct sock *sk);
 
 bool mptcp_addresses_equal(const struct mptcp_addr_info *a,
-			   const struct mptcp_addr_info *b, bool use_port);
+			   const struct mptcp_addr_info *b,
+			   bool use_port, bool use_id);
 void mptcp_local_address(const struct sock_common *skc, struct mptcp_addr_info *addr);
 
 /* called with sk socket lock held */
