Value,Description,Reference 1,IPv4 address,[RFC3209] 2,IPv6 address,[RFC3209] 3,Label,[RFC3473] 4,Unnumbered Interface ID,[RFC3477] 5,RRO Attributes,[RFC5420] 6-33,Unassigned, 34,SRLG sub-object,[RFC8001] 35,Hop Attributes,[RFC7570] 36,SR-RRO,[RFC8664] 37,Reserved,[RFC4873] 38,BYPASS_ASSIGNMENT IPv4 subobject,[RFC8271] 39,BYPASS_ASSIGNMENT IPv6 subobject,[RFC8271] 40,SRv6-RRO (PCEP-specific),[RFC9603] 41-63,Unassigned, 64,Path Key with 32-bit PCE ID,[RFC5553] 65,Path Key with 128-bit PCE ID,[RFC5553]