diff --git a/src/routing_layer/etcp_router.c b/src/routing_layer/etcp_router.c
index a5e2e238..593d6059 100644
--- a/src/routing_layer/etcp_router.c
+++ b/src/routing_layer/etcp_router.c
@@ -33,7 +33,7 @@ static void router_schedule_ack(struct ETCP_ROUTER_CONN* rconn);
 static void router_try_assembly(struct ETCP_ROUTER_CONN* rconn, struct ETCP_CONN* conn);
 static void router_deliver(struct ETCP_ROUTER_CONN* rconn, struct ETCP_CONN* conn, const uint8_t* wire, size_t wire_len);
 static void router_send_ctrl(struct ETCP_ROUTER_CONN* rconn, uint8_t flag_bits);
-static void router_send_rst(struct ETCP_ROUTER_CONN* rconn);
+static void router_send_rst(struct ETCP_ROUTER_CONN* rconn, struct ETCP_CONN* conn);
 static void router_restart_send(struct ETCP_ROUTER_CONN* rconn);
 static struct ETCP_CONN* router_send_conn(struct ETCP_ROUTER_CONN* rconn);
 static void router_send_kick(struct ETCP_ROUTER_CONN* rconn);
@@ -50,7 +50,7 @@ static void router_conn_reset(struct ETCP_ROUTER_CONN* rconn);
 static void free_entry(struct ll_entry* e) { queue_dgram_free(e); queue_entry_free(e); }
 static void router_handle_ack(struct UTUN_INSTANCE* inst, struct ETCP_ROUTER_CONN* rconn, uint32_t seq, uint64_t src_node_id, uint16_t ack_ts);
 static void router_forward_transit(struct UTUN_INSTANCE* inst, struct ll_entry* entry, struct SVC_ROUTE_HDR* hdr);
-static int  router_check_peer_restart(struct UTUN_INSTANCE* inst, struct ETCP_ROUTER_CONN** prconn, struct SVC_ROUTE_HDR* hdr, size_t wire_len);
+static int  router_check_peer_restart(struct UTUN_INSTANCE* inst, struct ETCP_ROUTER_CONN** prconn, struct SVC_ROUTE_HDR* hdr, size_t wire_len, struct ETCP_CONN* conn);
 static void router_handle_data_packet(struct ETCP_ROUTER_CONN* rconn, struct ETCP_CONN* conn, uint32_t seq, const uint8_t* wire, size_t wire_len);
 static void router_retransmit_one(struct ETCP_ROUTER_CONN* rconn, struct ROUTER_INFLIGHT* inf);
 static void router_retrans_schedule(struct ETCP_ROUTER_CONN* rconn);
@@ -153,6 +153,27 @@ void etcp_router_transit_queues_destroy(struct ETCP_CONN* conn) {
     conn->transit_queues = NULL;
 }
 
+// Сбросить recv_conn у всех ROUTER_CONN, ссылающихся на уничтожаемый ETCP_CONN.
+// recv_conn — заимствованный указатель; без очистки он висит после u_free(conn) (UAF).
+void etcp_router_conn_destroyed(struct ETCP_CONN* conn) {
+    if (!conn || !conn->instance || !conn->instance->router_conns) return;
+    struct ll_queue* q = conn->instance->router_conns;
+    for (uint32_t slot = 0; slot < q->hash_size; slot++) {
+        struct ll_entry* entry = q->hash_table[slot];
+        while (entry) {
+            struct ll_entry* next = entry->hash_next;
+            struct ETCP_ROUTER_CONN* rconn = (struct ETCP_ROUTER_CONN*)entry;
+            if (rconn->recv_conn == conn) {
+                DEBUG_DEBUG(DEBUG_CATEGORY_ETCPROUTE,
+                            "router: clear recv_conn remote=%016llx svc_id=%u (conn destroyed)",
+                            (unsigned long long)rconn->remote_node_id, rconn->svc_id);
+                rconn->recv_conn = NULL;
+            }
+            entry = next;
+        }
+    }
+}
+
 // ====================================================================
 // Управление ROUTER_CONN
 // ====================================================================
@@ -251,10 +272,9 @@ static void router_send_ctrl(struct ETCP_ROUTER_CONN* rconn, uint8_t flag_bits)
 }
 
 // Отправка RST удалённой стороне — сброс чужой «старой» сессии.
-// Идёт через recv_conn: в асимметричной топологии route-lookup до remote вернёт NULL.
-static void router_send_rst(struct ETCP_ROUTER_CONN* rconn) {
+// conn — живой физический conn, доставивший пакет (recv_conn может быть уже устаревшим).
+static void router_send_rst(struct ETCP_ROUTER_CONN* rconn, struct ETCP_CONN* conn) {
     struct UTUN_INSTANCE* inst = rconn->inst;
-    struct ETCP_CONN* conn = rconn->recv_conn;
     if (!conn) conn = topo_group_find_conn_for_node(topo_groups_find(inst->topo_groups, rconn->group_id), rconn->remote_node_id);
     if (!conn) {
         DEBUG_WARN(DEBUG_CATEGORY_ETCPROUTE, "router_rst: no route to %016llx svc_id=%u",
@@ -1069,7 +1089,7 @@ static void router_forward_transit(struct UTUN_INSTANCE* inst, struct ll_entry*
 }
 
 static int router_check_peer_restart(struct UTUN_INSTANCE* inst, struct ETCP_ROUTER_CONN** prconn,
-                                      struct SVC_ROUTE_HDR* hdr, size_t wire_len) {
+                                      struct SVC_ROUTE_HDR* hdr, size_t wire_len, struct ETCP_CONN* conn) {
     (void)wire_len;
     struct ETCP_ROUTER_CONN* rconn = *prconn;
     if (!(hdr->flags & ROUTER_FLAG_START)) return 0;   // не START — не рестарт
@@ -1091,7 +1111,7 @@ static int router_check_peer_restart(struct UTUN_INSTANCE* inst, struct ETCP_ROU
                    "router: peer reset_id=%016llx != mine=%016llx — master keeps epoch, RST to %016llx svc_id=%u",
                    (unsigned long long)peer_rid, (unsigned long long)rconn->reset_id,
                    (unsigned long long)hdr->src_node_id, hdr->svc_id);
-        router_send_rst(rconn);
+        router_send_rst(rconn, conn);
         return 0;
     } else {
         // slave принимает эпоху мастера и ресетится.
@@ -1207,11 +1227,11 @@ static void etcp_router_recv_cb(struct ETCP_CONN* conn, struct ll_entry* entry)
         rconn = etcp_router_conn_get(inst, hdr->group_id, hdr->src_node_id, hdr->svc_id);
         if (!rconn) { free_entry(entry); return; }
     }
-    if (router_check_peer_restart(inst, &rconn, hdr, entry->len) != 0) { free_entry(entry); return; }
+    if (router_check_peer_restart(inst, &rconn, hdr, entry->len, conn) != 0) { free_entry(entry); return; }
 
     // Сервер после рестарта «ждёт START»: пришёл не-START пакет от старой сессии → RST.
     if (!rconn->peer_sync_done && !(hdr->flags & ROUTER_FLAG_START)) {
-        router_send_rst(rconn);
+        router_send_rst(rconn, conn);
         free_entry(entry); return;
     }
 
diff --git a/src/routing_layer/etcp_router.h b/src/routing_layer/etcp_router.h
index d0bd71a3..e07dbcc4 100644
--- a/src/routing_layer/etcp_router.h
+++ b/src/routing_layer/etcp_router.h
@@ -245,6 +245,9 @@ void etcp_router_conn_restart(struct UTUN_INSTANCE* inst, uint64_t group_id, uin
 // Удалить все транзитные очереди соединения (вызывается при закрытии ETCP_CONN)
 void etcp_router_transit_queues_destroy(struct ETCP_CONN* conn);
 
+// Сбросить recv_conn у всех ROUTER_CONN, ссылающихся на уничтожаемый ETCP_CONN.
+void etcp_router_conn_destroyed(struct ETCP_CONN* conn);
+
 
 #ifdef __cplusplus
 }
diff --git a/src/transport_layer/etcp.c b/src/transport_layer/etcp.c
index f91cb253..3fe2f45a 100644
--- a/src/transport_layer/etcp.c
+++ b/src/transport_layer/etcp.c
@@ -407,6 +407,7 @@ void etcp_connection_close(struct ETCP_CONN* etcp) {
 
     routing_del_conn(etcp);
     etcp_router_transit_queues_destroy(etcp);
+    etcp_router_conn_destroyed(etcp);
 
     if (etcp->normalizer) { pn_deinit((struct PKTNORM*)etcp->normalizer); etcp->normalizer = NULL; etcp->send_input_q = NULL; }