Type,Description,Reference 0,Defined by Type Extension,[RFC5497] 1,Defined by Type Extension,[RFC5497] 2,Defined by Type Extension,[RFC6130] 3,Defined by Type Extension,[RFC6130] 4,Defined by Type Extension,[RFC6130] 5,ICV,[RFC7182] 6,TIMESTAMP,[RFC7182] 7,LINK_METRIC,[RFC7181] 8,Defined by Type Extension,[RFC7181] 9,Defined by Type Extension,[RFC7181] 10,Defined by Type Extension,[RFC7181] 11-223,Unassigned, 224-255,Reserved for Experimental Use,[RFC5444]