diff --git a/lonetix/include/df/bgp/bgp.h b/lonetix/include/df/bgp/bgp.h
index 54838ea..59edee1 100755
--- a/lonetix/include/df/bgp/bgp.h
+++ b/lonetix/include/df/bgp/bgp.h
@@ -321,6 +321,7 @@ typedef Uint8 BgpCapCode;
 #define BGP_ATTR_LARGE_COMMUNITY                          U8_C(32)
 #define BGP_ATTR_BGPSEC_PATH                              U8_C(33)
 #define BGP_ATTR_COMMUNITY_CONTAINER                      U8_C(34)
+#define BGP_ATTR_OTC                                      U8_C(35)
 #define BGP_ATTR_PREFIX_SID                               U8_C(40)
 #define BGP_ATTR_SET                                      U8_C(128)
 #define BGP_ATTR_RESERVED                                 U8_C(255)