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+
+		 BGP-4[+] UPDATE Attribute TypeCode list
+
+  Value  Attribute            References
+=========================================================================
+    1    ORIGIN               [RFC 4271]
+    2    AS_PATH              [RFC 4271]
+    3    NEXT_HOP             [RFC 4271]
+    4    MULTI_EXIT_DISC      [RFC 4271]
+    5    LOCAL_PREF           [RFC 4271]
+    6    ATOMIC_AGGREGATE     [RFC 4271]
+    7    AGGREGATOR           [RFC 4271]
+    8    COMMUNITIES          [RFC 1997]
+    9    ORIGINATOR_ID        [RFC 4456]
+   10    CLUSTER_LIST         [RFC 4456]
+   11    DPA                  [draft-ietf-idr-bgp-dpa-05.txt(expired)]
+   12    ADVERTISER           [RFC 1863]
+   13    RCID_PATH            [RFC 1863]
+   14    MP_REACH_NLRI        [RFC 4760]
+   15    MP_UNREACH_NLRI      [RFC 4760]
+   16    EXT_COMMUNITIES      [RFC 4360]
+   17    AS4_PATH             [RFC 4893]
+   18    AS4_AGGREGATOR       [RFC 4893]
+=========================================================================