nat: Improve log message and refer to the BSC that was lost.
diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index 32f2196..b4e096e 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -600,9 +600,13 @@
 
 	if (!msg) {
 		if (error == 0)
-			LOGP(DNAT, LOGL_ERROR,	"The connection to the BSC was lost. Cleaning it\n");
+			LOGP(DNAT, LOGL_ERROR,
+			     "The connection to the BSC Nr: %d was lost. Cleaning it\n",
+			     bsc->cfg ? bsc->cfg->nr : -1);
 		else
-			LOGP(DNAT, LOGL_ERROR, "Failed to parse ip access message: %d\n", error);
+			LOGP(DNAT, LOGL_ERROR,
+			     "Stream error on BSC Nr: %d. Failed to parse ip access message: %d\n",
+			     bsc->cfg ? bsc->cfg->nr : -1, error);
 
 		bsc_close_connection(bsc);
 		return -1;