Value,Name,Reference
0,Reserved,[RFC9793]
1,BIER TLV,[RFC9793]
2,MPLS Encapsulation sub-TLV,[RFC9793]
3,non-MPLS Encapsulation sub-TLV,[RFC9793]
4,BIER Nexthop sub-TLV,[RFC9793]
5,BIER PHP Request,[RFC-ietf-bier-php-16]
6-65535,Unassigned,