diff --git a/openbsc/src/libbsc/system_information.c b/openbsc/src/libbsc/system_information.c
index bf20394..d40bbaf 100644
--- a/openbsc/src/libbsc/system_information.c
+++ b/openbsc/src/libbsc/system_information.c
@@ -905,6 +905,7 @@
 {
 	struct gsm48_system_information_type_6 *si6;
 	int l2_plen = 11;
+	int rc;
 
 	memset(output, GSM_MACBLOCK_PADDING, GSM_MACBLOCK_LEN);
 
@@ -935,8 +936,9 @@
 	gsm48_set_dtx(&si6->cell_options, bts->dtxu, bts->dtxu, false);
 
 	/* SI6 Rest Octets: 10.5.2.35a: PCH / NCH info, VBS/VGCS options */
+	rc = rest_octets_si6(si6->rest_octets, is_dcs_net(bts));
 
-	return l2_plen;
+	return l2_plen + rc;
 }
 
 static struct gsm48_si13_info si13_default = {