Address,BFD Authentication Type Name,Reference
0,Reserved,[RFC5880]
1,Simple Password,[RFC5880]
2,Keyed MD5,[RFC5880]
3,Meticulous Keyed MD5,[RFC5880]
4,Keyed SHA1,[RFC5880]
5,Meticulous Keyed SHA1,[RFC5880]
6-255,Unassigned,