diff --git a/src/etcp.c b/src/etcp.c
index 361470ff..210a56a6 100644
--- a/src/etcp.c
+++ b/src/etcp.c
@@ -1294,7 +1294,7 @@ void etcp_conn_input(struct ETCP_DGRAM* pkt) {
     uint16_t len = pkt->data_len;
     uint16_t ts = pkt->timestamp;  // Received timestamp
 
-    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[%s] RX pkt", etcp->log_name);
+    DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[%s] RX pkt dlen=%d", etcp->log_name, len);
 
     while (len >= 1) {
         uint8_t type = data[0];
@@ -1549,6 +1549,12 @@ void etcp_conn_input(struct ETCP_DGRAM* pkt) {
 
     }
 
+    if (memory_pool_is_freed(pkt->link->etcp->instance->pkt_pool, pkt)) {
+        DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_conn_input: pkt=%p ALREADY FREED in pkt_pool — HALTING", (void*)pkt);
+        volatile int _halt = 1; while (_halt) {}
+    }
+
+
     memory_pool_free(etcp->instance->pkt_pool, pkt);  // Free the incoming dgram
 }