diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index 06c130b..9e0a23d 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -201,6 +201,7 @@
 		case SCCP_MSG_TYPE_RLSD:
 		case SCCP_MSG_TYPE_CREF:
 		case SCCP_MSG_TYPE_DT1:
+		case SCCP_MSG_TYPE_IT:
 			con = patch_sccp_src_ref_to_bsc(msg, parsed, nat);
 			if (parsed->gsm_type == BSS_MAP_MSG_ASSIGMENT_RQST) {
 				if (con) {
@@ -424,6 +425,7 @@
 		case SCCP_MSG_TYPE_CREF:
 		case SCCP_MSG_TYPE_DT1:
 		case SCCP_MSG_TYPE_CC:
+		case SCCP_MSG_TYPE_IT:
 			con = patch_sccp_src_ref_to_msc(msg, parsed, nat);
 			break;
 		case SCCP_MSG_TYPE_RLC: