Diagnose adopted transports and isolate traffic test commands

src/transport_layer/node_conn_direct.c

@@ -832,6 +832,8 @@ int node_conn_direct_open(struct UTUN_INSTANCE* inst, uint64_t node_id,
         if (!entry) { DEBUG_ERROR(DEBUG_CATEGORY_NCD, "[ncd] alloc entry failed node=0x%016llx", (unsigned long long)node_id); return NCD_ERR; }
         entry->node_id = node_id; entry->conn = conn; entry->ua = inst->ua;
         entry->up = (uint8_t)(conn->links_up ? 1 : 0);
+        DEBUG_DEBUG(DEBUG_CATEGORY_NCD, "[ncd] adopt conn=%p node=%016llx state=%d links_up=%u initialized=%u tx=%u",
+            (void*)conn, (unsigned long long)node_id, conn->state, conn->links_up, conn->initialized, conn->tx_state);
         if (ncd_registry_add(inst, entry) < 0) { u_free(entry); return NCD_ERR; }
 
         struct NODE_CONN_DIRECT* h = u_calloc(1, sizeof(*h));