Value,Parameter,Reference
0,Reserved,[RFC3103]
1,Address,[RFC3103]
2,Ports,[RFC3103]
3,Lease Time,[RFC3103]
4,Client ID,[RFC3103]
5,Bind ID,[RFC3103]
6,Tunnel Type,[RFC3103]
7,RSIP Method,[RFC3103]
8,Error,[RFC3103]
9,Flow Policy,[RFC3103]
10,Indicator,[RFC3103]
11,Message Counter,[RFC3103]
12,Vendor Specific Parameter,[RFC3103]
13-21,Unassigned,
22,SPI,[RFC3104]
23-240,Unassigned,
241-255,Reserved for Private Use,[RFC3103]