Add a few tlvs for tag stripping
diff --git a/openflow_input/bsn_tlv b/openflow_input/bsn_tlv
index 18701ea..84caa49 100644
--- a/openflow_input/bsn_tlv
+++ b/openflow_input/bsn_tlv
@@ -480,3 +480,19 @@
     uint16_t length;
     uint8_t value;
 };
+
+struct of_bsn_tlv_strip_vlan_on_egress : of_bsn_tlv {
+    uint16_t type == 73;
+};
+
+struct of_bsn_tlv_set_loopback_mode: of_bsn_tlv {
+    uint16_t type == 74;
+};
+
+struct of_bsn_tlv_strip_mpls_l2_on_ingress : of_bsn_tlv {
+    uint16_t type == 75;
+};
+
+struct of_bsn_tlv_strip_mpls_l3_on_ingress : of_bsn_tlv {
+    uint16_t type == 76;
+};