Decimal,Name,Reference
0,Reserved,[JKR1]
1,Proteon,[JS18]
2,IBM,[JXR]
3,CMU,[SXW]
4,Unix,[MS9]
5,ACC,[AB20]
6,TWG,[MTR]
7,CAYMAN,[BXM2]
8,NYSERNET,[MS9]
9,cisco,[GS2]
10,BBN,[RH6]
11,Unassigned,[JKR1]
12,MIT,[JR35]
13-254,Unassigned,[JKR1]
255,Reserved,[JKR1]