diff --git a/openbsc/src/abis_nm.c b/openbsc/src/abis_nm.c
index 9a2fad7..9308f77 100755
--- a/openbsc/src/abis_nm.c
+++ b/openbsc/src/abis_nm.c
@@ -2515,6 +2515,17 @@
 		else
 			DEBUGPC(DNM, "\n");
 		break;
+	case NM_MT_IPACC_SET_ATTR_ACK:
+		DEBUGPC(DNM, "SET ATTR ACK\n");
+		break;
+	case NM_MT_IPACC_SET_ATTR_NACK:
+		DEBUGPC(DNM, "SET ATTR NACK ");
+		if (TLVP_PRESENT(&tp, NM_ATT_NACK_CAUSES))
+			DEBUGPC(DNM, " CAUSE=%s\n", 
+				nack_cause_name(*TLVP_VAL(&tp, NM_ATT_NACK_CAUSES)));
+		else
+			DEBUGPC(DNM, "\n");
+		break;
 	default:
 		DEBUGPC(DNM, "unknown\n");
 		break;