Value,Length,Name,Reference
0,,Reserved,[RFC3973]
1,2,Hold Time,[RFC7761]
2,4,LAN Prune Delay,[RFC3973]
3-16,-,Reserved,[RFC7761]
17,16,Label Parameters (renew 8/01),[Dino_Farinacci]
18,-,Deprecated,
19,4,DR Priority (renew 8/01),[RFC7761]
20,4,Generation ID,[RFC3973]
21,4,State-Refresh,[RFC3973]
22,0,Bidirectional Capable,[RFC5015]
23,1,VCI Capability (renew 8/01),[Dino_Farinacci]
24,variable,Address List,[RFC7761]
25,variable,Neighbor List TLV (renew 5/07),[Alex_Zinin]
26,0,Join Attribute,[RFC5384]
27,variable,PIM-over-TCP-Capable,[RFC6559]
28,variable,PIM-over-SCTP-Capable,[RFC6559]
29,variable,Pop-Count,[RFC6807]
30,0,PIM MT-ID,[RFC6420]
31,8,Interface ID,[RFC6395]
32,0,PIM ECMP Redirect Hello Option,[RFC6754]
33,2,vPC Peer ID (renew 6/14),[Siddanagouda_Khot]
34,4,DR Load-Balancing Capability (DRLB-Cap),[RFC8775]
35,variable,DR Load-Balancing List (DRLB-List),[RFC8775]
36,0,Hierarchical Join/Prune Attribute,[RFC7887]
37,variable,DR Address Option,[draft-ietf-pim-dr-improvement-10]
38,variable,BDR Address Option,[draft-ietf-pim-dr-improvement-10]
39,4,BFD Discriminator Option,[RFC9186]
40,0,Packed Assert Capability,[RFC9466]
41-65000,-,Unassigned,
65001-65535,-,Reserved (Private Use),