diff --git a/openflow_input/bsn_tlv b/openflow_input/bsn_tlv
index 682fb26..b0c4f0c 100644
--- a/openflow_input/bsn_tlv
+++ b/openflow_input/bsn_tlv
@@ -506,3 +506,13 @@
     uint16_t length;
     uint16_t value;
 };
+
+struct of_bsn_tlv_igmp_snooping : of_bsn_tlv {
+    uint16_t type == 78;
+    uint16_t length;
+};
+
+struct of_bsn_tlv_l2_multicast_lookup : of_bsn_tlv {
+    uint16_t type == 79;
+    uint16_t length;
+};