--- etcp_connections.c.backup
+++ etcp_connections.c
@@ -409,6 +409,7 @@
     uint8_t enc_buf[1600];
     size_t enc_buf_len;
     dgram->timestamp=get_current_timestamp();
+    printf("[ETCP DEBUG] About to encrypt: data_len=%d, noencrypt_len=%d, len=%d\\n", dgram->data_len, dgram->noencrypt_len, len);
     
     // DUMP: Show packet before encryption
     dump_packet_bytes("BEFORE ENCRYPT", dgram->data, dgram->data_len);