diff --git a/l2tpns.c b/l2tpns.c
index fa7cc2d..2d5f348 100644
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4937,7 +4937,7 @@ static void processppp(sessionidt s, uint8_t *buf, int len, uint8_t *p, int l, s
 			return;
 		}
 
-		LOG(1, s, t, "UDP packet contains session which is not opened.  Dropping packet.\n");
+		LOG(1, s, t, "UDP packet from %s contains session which is not opened.  Dropping packet.\n", fmtaddr(addr->sin_addr.s_addr, 0));
 		STAT(tunnel_rx_errors);
 		return;
 	}